Outsourcing a small molecule program means hiring CRO and CDMO partners for medicinal and synthetic chemistry, in vitro and in vivo pharmacology, ADME and PK/PD, GLP toxicology, and GMP API manufacturing through scale-up. Specialist small molecule shops bring route chemistry, solid-form work, and analytical depth generalists lack. On BioBridgeX, buyers source and compare vetted suppliers free, as the neutral marketplace, and contract directly with the supplier they choose.
Small Molecule CRO and CDMO vendors (180)
UNIQ Trials
Apeloa Pharmaceutical
TRiCBIO
VCHP Clinical Solutions
AAPharmaSyn
Famar Group
CDMO · Formulation Development, LNP / Delivery Formulation, Process Development
Nipro PharmaPackaging
CDMO · Drug Product Manufacturing, Aseptic Fill-Finish, QC & Release Testing
AbbVie Contract Manufacturing
CRO & CDMO · Drug Substance: Small Molecule / API, Drug Substance: Biologics, Formulation Development
Singota Solutions
CDMO · Aseptic Fill-Finish, Drug Product Manufacturing, QC & Release Testing
Symbiosis Pharmaceutical Services
CDMO · Aseptic Fill-Finish, Drug Product Manufacturing, QC & Release Testing
Novocol Pharma
CDMO · Formulation Development, LNP / Delivery Formulation, Process Development
Lifecore Biomedical
CDMO · Formulation Development, LNP / Delivery Formulation, Process Development
Kindeva Drug Delivery
CDMO · Formulation Development, LNP / Delivery Formulation, Process Development
Grand River Aseptic Manufacturing (GRAM)
CDMO · Formulation Development, LNP / Delivery Formulation, Process Development
Curia Global
CRO & CDMO · Drug Substance: Small Molecule / API, Drug Substance: Biologics, Formulation Development
Jubilant HollisterStier
CDMO · Formulation Development, LNP / Delivery Formulation, Process Development
Siegfried Holding
CRO & CDMO · Drug Substance: Small Molecule / API, Formulation Development, LNP / Delivery Formulation
Aenova Group
CDMO · Formulation Development, LNP / Delivery Formulation, Process Development
Fresenius Kabi Contract Manufacturing
CDMO · Formulation Development, LNP / Delivery Formulation, Process Development
Simtra BioPharma Solutions
CDMO · Formulation Development, LNP / Delivery Formulation, Process Development
Vetter Pharma
CDMO · Formulation Development, LNP / Delivery Formulation, Process Development
PCI Pharma Services
CDMO · Aseptic Fill-Finish, Drug Product Manufacturing, Formulation Development
ChemPartner
CRO & CDMO · ADC / Bioconjugation, Medicinal & Synthetic Chemistry, Drug Substance: Biologics
NJ Bio
CRO & CDMO · ADC / Bioconjugation, Medicinal & Synthetic Chemistry, Assay Development & Screening
Formosa Laboratories
CDMO · ADC / Bioconjugation, Drug Substance: Small Molecule / API, Medicinal & Synthetic Chemistry
Axplora (formerly Novasep)
CDMO · ADC / Bioconjugation, Drug Substance: Small Molecule / API, Medicinal & Synthetic Chemistry
AsymBio (Asymchem)
CDMO · ADC / Bioconjugation, Drug Substance: Biologics, Drug Substance: Small Molecule / API
BSP Pharmaceuticals
CDMO · ADC / Bioconjugation, Aseptic Fill-Finish, Drug Product Manufacturing
Levena Biopharma
CRO & CDMO · ADC / Bioconjugation, Medicinal & Synthetic Chemistry, Process Development
Oncotec Pharma Produktion (medac group)
CDMO · Aseptic Fill-Finish, Drug Product Manufacturing, Formulation Development
CARBOGEN AMCIS
CDMO · ADC / Bioconjugation, Drug Substance: Small Molecule / API, Medicinal & Synthetic Chemistry
Cerbios-Pharma
CDMO · ADC / Bioconjugation, Drug Substance: Small Molecule / API, Drug Substance: Biologics
MilliporeSigma (SAFC)
CDMO · ADC / Bioconjugation, Drug Substance: Small Molecule / API, Process Development
WuXi STA (STA Pharmaceutical)
CDMO · Peptide / Oligo Synthesis, Drug Substance: Small Molecule / API, ADC / Bioconjugation
Recipharm
CDMO · mRNA / RNA Manufacturing, LNP / Delivery Formulation, Drug Product Manufacturing
Ascendia Pharmaceutical Solutions
CDMO · LNP / Delivery Formulation, Formulation Development, Drug Product Manufacturing
Evonik (Health Care)
CDMO · LNP / Delivery Formulation, Formulation Development, Drug Product Manufacturing
Fujifilm (Toyama Chemical / FUJIFILM Diosynth LNP)
CDMO · mRNA / RNA Manufacturing, LNP / Delivery Formulation, Aseptic Fill-Finish
Ajinomoto Bio-Pharma Services
CRO & CDMO · Peptide / Oligo Synthesis, ADC / Bioconjugation, Drug Substance: Small Molecule / API
Pharmaron (Biologics / CGT)
CRO & CDMO · Viral Vector Manufacturing, Plasmid DNA Manufacturing, Cell Therapy Manufacturing
SK pharmteco
CDMO · Viral Vector Manufacturing, Plasmid DNA Manufacturing, Cell Therapy Manufacturing
Catalent
CDMO · Viral Vector Manufacturing, Cell Therapy Manufacturing, Plasmid DNA Manufacturing
BioVectra
CDMO · Process Development, Analytical Development, Drug Substance: Biologics
Teva API (TAPI)
CDMO · Drug Substance: Small Molecule / API, Process Development, Analytical Development
Almac Group
CRO & CDMO · Medicinal & Synthetic Chemistry, Process Development, Drug Substance: Small Molecule / API
Onyx Scientific (IPCA)
CDMO · Medicinal & Synthetic Chemistry, Process Development, Drug Substance: Small Molecule / API
Laurus Labs (Laurus Synthesis)
CDMO · Medicinal & Synthetic Chemistry, Process Development, Drug Substance: Small Molecule / API
Navin Molecular (Navin Fluorine)
CDMO · Medicinal & Synthetic Chemistry, Process Development, Drug Substance: Small Molecule / API
F.I.S. (Fabbrica Italiana Sintetici)
CDMO · Medicinal & Synthetic Chemistry, Process Development, Drug Substance: Small Molecule / API
PROCOS
CDMO · Medicinal & Synthetic Chemistry, Process Development, Drug Substance: Small Molecule / API
Sumitomo Chemical (Pharmaceuticals/CDMO)
CDMO · Process Development, Drug Substance: Small Molecule / API, Analytical Development
Fermion (Orion Corporation)
CDMO · Process Development, Drug Substance: Small Molecule / API, Analytical Development
Minakem (Minafin Group)
CDMO · Medicinal & Synthetic Chemistry, Process Development, Drug Substance: Small Molecule / API
Curia (formerly AMRI)
CRO & CDMO · Target ID & Validation, Hit-to-Lead, Lead Optimization
Bachem
CDMO · Peptide / Oligo Synthesis, Process Development, Analytical Development
AMPAC Fine Chemicals (SK pharmteco)
CDMO · Medicinal & Synthetic Chemistry, Process Development, Drug Substance: Small Molecule / API
Veranova
CDMO · Medicinal & Synthetic Chemistry, Process Development, Drug Substance: Small Molecule / API
Pfizer CentreOne
CRO & CDMO · Drug Substance: Small Molecule / API, Process Development, Analytical Development
Noramco
CDMO · Drug Substance: Small Molecule / API, Process Development, Analytical Development
Thermo Fisher Scientific (Patheon)
CRO & CDMO · Process Development, Drug Substance: Small Molecule / API, Analytical Development
Divi's Laboratories
CDMO · Medicinal & Synthetic Chemistry, Process Development, Drug Substance: Small Molecule / API
Dr. Reddy's Custom Pharma Services (CPS)
CRO & CDMO · Process Development, Drug Substance: Small Molecule / API, Analytical Development
Piramal Pharma Solutions
CRO & CDMO · Hit-to-Lead, Lead Optimization, Medicinal & Synthetic Chemistry
EUROAPI
CDMO · Drug Substance: Small Molecule / API, Process Development, Analytical Development
Seqens
CDMO · Medicinal & Synthetic Chemistry, Process Development, Drug Substance: Small Molecule / API
Olon Group
CDMO · Drug Substance: Small Molecule / API, Process Development, Analytical Development
Fareva
CRO & CDMO · Drug Substance: Small Molecule / API, Process Development, Analytical Development
DOTTIKON ES
CDMO · Medicinal & Synthetic Chemistry, Process Development, Drug Substance: Small Molecule / API
Hovione
CDMO · Drug Substance: Small Molecule / API, Process Development, Analytical Development
CordenPharma
CRO & CDMO · Drug Substance: Small Molecule / API, Process Development, Analytical Development
Sterling Pharma Solutions
CDMO · Medicinal & Synthetic Chemistry, Process Development, Drug Substance: Small Molecule / API
WuXi STA (WuXi AppTec)
CRO & CDMO · Medicinal & Synthetic Chemistry, Process Development, Analytical Development
Asymchem
CRO & CDMO · Medicinal & Synthetic Chemistry, Process Development, Drug Substance: Small Molecule / API
Siegfried
CDMO · Drug Substance: Small Molecule / API, Process Development, Analytical Development
Cambrex
CDMO · Drug Substance: Small Molecule / API, Process Development, Analytical Development
Lonza
CRO & CDMO · Drug Substance: Small Molecule / API, Process Development, Analytical Development
Eurofins (Pharma Discovery & Bioanalytical Services)
CRO & CDMO · Bioanalytical Services, Central Laboratory Services, Genetic Toxicology
QPS Holdings
CRO · Bioanalytical Services, DMPK / ADME, GLP Toxicology
Sannova Analytical
CRO · Bioanalytical Services, Immunogenicity & Immunotoxicology, Biomarker Discovery & Development
NorthEast BioLab
CRO · Bioanalytical Services, Immunogenicity & Immunotoxicology, Biomarker Discovery & Development
Nucro-Technics
CRO & CDMO · GLP Toxicology, Genetic Toxicology, Bioanalytical Services
Gentronix
CRO · Genetic Toxicology, In Vitro / Early Toxicology
Simulations Plus
CRO · PK/PD & Modeling, DMPK / ADME, In Vitro / Early Toxicology
Certara
CRO · PK/PD & Modeling, Biostatistics & Statistical Programming, Medical Writing
ACM Global Laboratories
CRO · Central Laboratory Services, Biomarker Discovery & Development, Bioanalytical Services
LabConnect
CRO · Central Laboratory Services, Biomarker Discovery & Development, Clinical Data Management
Labcorp
CRO & CDMO · Central Laboratory Services, GLP Toxicology, Safety Pharmacology
Q2 Solutions
CRO · Central Laboratory Services, Biomarker Discovery & Development, Bioanalytical Services
BioModels
CRO · In Vitro Pharmacology, Biomarker Discovery & Development, PK/PD & Modeling
Pharmacology Discovery Services (PDS)
CRO · In Vitro Pharmacology, Safety Pharmacology, Assay Development & Screening
TD2 (Translational Drug Development)
CRO · In Vitro Pharmacology, Biomarker Discovery & Development, PK/PD & Modeling
InnoSer Laboratories
CRO · In Vitro Pharmacology, Biomarker Discovery & Development, PK/PD & Modeling
Noble Life Sciences
CRO · In Vitro Pharmacology, GLP Toxicology, Bioanalytical Services
Hooke Laboratories
CRO · In Vitro Pharmacology, Biomarker Discovery & Development
GemPharmatech
CRO · In Vitro Pharmacology, Target ID & Validation, Biomarker Discovery & Development
Biocytogen
CRO · In Vitro Pharmacology, Target ID & Validation, Biomarker Discovery & Development
ProQinase (Reaction Biology Europe)
CRO · In Vitro Pharmacology, Assay Development & Screening, Biomarker Discovery & Development
XenTech
CRO · In Vitro Pharmacology, Biomarker Discovery & Development, PK/PD & Modeling
EPO Berlin-Buch (Experimental Pharmacology & Oncology)
CRO · In Vitro Pharmacology, Biomarker Discovery & Development, PK/PD & Modeling
Labcorp (Labcorp Drug Development)
CRO · In Vitro Pharmacology, DMPK / ADME, GLP Toxicology
WuXi AppTec (WuXi Biology)
CRO & CDMO · In Vitro Pharmacology, DMPK / ADME, Bioanalytical Services
The Jackson Laboratory (JAX)
CRO · In Vitro Pharmacology, Biomarker Discovery & Development, Target ID & Validation
BenevolentAI
CRO · Target ID & Validation, Computational / AI-Driven Discovery
Iktos
CRO · Hit-to-Lead, Lead Optimization, Medicinal & Synthetic Chemistry
Atomwise
CRO · Target ID & Validation, Hit-to-Lead, Computational / AI-Driven Discovery
Insilico Medicine
CRO · Target ID & Validation, Hit-to-Lead, Lead Optimization
Recursion Pharmaceuticals
CRO · Target ID & Validation, Assay Development & Screening, Hit-to-Lead
OpenEye, Cadence Molecular Sciences
CRO · Hit-to-Lead, Lead Optimization, Computational / AI-Driven Discovery
Cresset
CRO · Hit-to-Lead, Lead Optimization, Medicinal & Synthetic Chemistry
Schrodinger
CRO · Target ID & Validation, Hit-to-Lead, Lead Optimization
Hypha Discovery
CRO · Medicinal & Synthetic Chemistry, DMPK / ADME, Bioanalytical Services
ChemDiv
CRO · Assay Development & Screening, Hit-to-Lead, Lead Optimization
Enamine
CRO · Assay Development & Screening, Hit-to-Lead, Lead Optimization
Proteros Biostructures
CRO · Assay Development & Screening, Hit-to-Lead, Structural Biology
Vipergen
CRO · Assay Development & Screening, Hit-to-Lead, Medicinal & Synthetic Chemistry
HitGen
CRO · Assay Development & Screening, Hit-to-Lead, Lead Optimization
X-Chem
CRO · Assay Development & Screening, Hit-to-Lead, Lead Optimization
Curia
CRO & CDMO · Target ID & Validation, Assay Development & Screening, Hit-to-Lead
BioDuro
CRO & CDMO · Target ID & Validation, Assay Development & Screening, Hit-to-Lead
Aurigene Pharmaceutical Services
CRO & CDMO · Target ID & Validation, Assay Development & Screening, Hit-to-Lead
Selvita
CRO · Target ID & Validation, Assay Development & Screening, Hit-to-Lead
Charnwood Discovery
CRO · Target ID & Validation, Assay Development & Screening, Hit-to-Lead
Domainex
CRO · Target ID & Validation, Assay Development & Screening, Hit-to-Lead
Sygnature Discovery
CRO · Target ID & Validation, Assay Development & Screening, Hit-to-Lead
Syngene International
CRO & CDMO · GLP Toxicology, Safety Pharmacology, DMPK / ADME
Aragen Life Sciences
CRO & CDMO · DMPK / ADME, GLP Toxicology, Safety Pharmacology
Sai Life Sciences
CRO & CDMO · DMPK / ADME, In Vitro / Early Toxicology, GLP Toxicology
JOINN Laboratories / Biomere
CRO · GLP Toxicology, Safety Pharmacology, Toxicokinetics (TK)
KCAS Bio
CRO · Bioanalytical Services, Biomarker Discovery & Development, Immunogenicity & Immunotoxicology
IQVIA Laboratories (Q2 Solutions)
CRO · Bioanalytical Services, Biomarker Discovery & Development, DMPK / ADME
Lovelace Biomedical
CRO · GLP Toxicology, Safety Pharmacology, Toxicokinetics (TK)
Vivotecnia
CRO · GLP Toxicology, Safety Pharmacology, Genetic Toxicology
Nuvisan
CRO & CDMO · DMPK / ADME, Bioanalytical Services, In Vitro / Early Toxicology
IIT Research Institute (IITRI)
CRO · GLP Toxicology, Safety Pharmacology, Toxicokinetics (TK)
Oncodesign Services
CRO · In Vitro Pharmacology, DMPK / ADME, Bioanalytical Services
Biotrial
CRO · Safety Pharmacology, GLP Toxicology, Toxicokinetics (TK)
Gentronix (a Scantox company)
CRO · Genetic Toxicology, In Vitro / Early Toxicology, Assay Development & Screening
Scantox
CRO · GLP Toxicology, Safety Pharmacology, Genetic Toxicology
Cyprotex (an Evotec company)
CRO · In Vitro / Early Toxicology, DMPK / ADME, Genetic Toxicology
Evotec
CRO & CDMO · In Vitro / Early Toxicology, DMPK / ADME, Safety Pharmacology
Reaction Biology
CRO · Assay Development & Screening, In Vitro Pharmacology, Target ID & Validation
Champions Oncology
CRO · In Vitro Pharmacology, Biomarker Discovery & Development, Assay Development & Screening
Crown Bioscience
CRO · In Vitro Pharmacology, Biomarker Discovery & Development, Assay Development & Screening
Frontage Laboratories
CRO & CDMO · GLP Toxicology, Safety Pharmacology, Toxicokinetics (TK)
Eurofins Discovery
CRO · In Vitro / Early Toxicology, Safety Pharmacology, DMPK / ADME
WuXi AppTec
CRO & CDMO · GLP Toxicology, Safety Pharmacology, Genetic Toxicology
Inotiv
CRO · GLP Toxicology, Safety Pharmacology, Genetic Toxicology
Labcorp (Labcorp Drug Development / former Covance)
CRO & CDMO · GLP Toxicology, Safety Pharmacology, Genetic Toxicology
Charles River Laboratories
CRO & CDMO · GLP Toxicology, Safety Pharmacology, Genetic Toxicology
Avance Clinical
CRO · Clinical Operations, Phase 1 / Early Clinical Unit, Clinical Data Management
Cromos Pharma
CRO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
George Clinical (Emerald Clinical)
CRO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
TFS HealthScience
CRO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
Cytel
CRO · Biostatistics & Statistical Programming, Clinical Data Management, Clinical Operations
Precision for Medicine
CRO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
Pharmaron
CRO & CDMO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
WuXi Clinical
CRO · Clinical Operations, Phase 1 / Early Clinical Unit, Clinical Data Management
Tigermed
CRO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
CMIC Group
CRO & CDMO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
Linical
CRO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
Altasciences
CRO & CDMO · Phase 1 / Early Clinical Unit, Clinical Operations, Bioanalytical Services
Celerion
CRO · Phase 1 / Early Clinical Unit, Clinical Operations, Bioanalytical Services
ClinChoice
CRO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
Emmes
CRO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
ProPharma
CRO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
Novotech
CRO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
Premier Research
CRO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
Veristat
CRO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
Caidya
CRO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
Allucent
CRO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
PSI CRO
CRO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
Worldwide Clinical Trials
CRO · Clinical Operations, Phase 1 / Early Clinical Unit, Clinical Data Management
Syneos Health
CRO · Clinical Operations, Phase 1 / Early Clinical Unit, Clinical Data Management
Medpace
CRO · Clinical Operations, Phase 1 / Early Clinical Unit, Clinical Data Management
Fortrea
CRO · Clinical Operations, Phase 1 / Early Clinical Unit, Clinical Data Management
PPD (Thermo Fisher Scientific)
CRO · Clinical Operations, Phase 1 / Early Clinical Unit, Clinical Data Management
Parexel
CRO · Clinical Operations, Phase 1 / Early Clinical Unit, Clinical Data Management
ICON plc
CRO · Clinical Operations, Phase 1 / Early Clinical Unit, Clinical Data Management
IQVIA
CRO · Clinical Operations, Clinical Data Management, Biostatistics & Statistical Programming
What does it take to develop and manufacture a Small Molecule drug?
Small molecules are the oldest and best understood drug class, and that maturity cuts both ways. The science is well trodden, so there is a deep bench of CROs and CDMOs who can run any single piece of the work. The flip side is that a small molecule program touches an unusually long chain of distinct skills, and the supplier who is brilliant at one of them is often mediocre at the next. You rarely buy a small molecule program from one shop. You assemble it.
On the discovery and preclinical side, the work runs through medicinal and synthetic chemistry (analog design, route scouting, custom synthesis, research-scale batches), in vitro pharmacology and selectivity panels, then the ADME and DMPK package: solubility, permeability, microsomal and hepatocyte stability, CYP inhibition and induction, plasma protein binding, and in vivo PK across species. Toxicology follows, exploratory first, then the GLP studies that support the IND. Each of these is its own specialty with its own equipment and its own regulatory expectations.
Where specialist small molecule CDMOs really separate from generalists is on the chemistry, manufacturing, and controls side. Making a clean, scalable API is harder than it looks. You need process chemists who can take a medicinal-chemistry route that worked at gram scale and redesign it for kilos and then tonnes, solid-state scientists who screen polymorphs and salts before a bad crystal form ruins a formulation, and analytical teams who can develop and validate methods, control genotoxic impurities (the nitrosamine problem is the obvious recent example), and write the CMC sections a regulator will actually accept. A generalist CDMO that mostly does fill-finish or biologics will struggle here. A high-potency (HPAPI) compound narrows the field further, because containment to OEL bands is a real capital investment that not every site has made.
How do you choose a CRO or CDMO for Small Molecule?
The right filter is fit to your specific chemistry and stage, not the size of the logo. A shop that excels at early discovery chemistry is not automatically the one you want carrying a process into GMP, and a large commercial CDMO may not want your 50 kg clinical campaign. Match the supplier to the exact job, and confirm the people who would actually run your work have done that chemistry before. Run this checklist before you sign anything:
- Relevant platform and track record: ask for case studies in your reaction type and molecular class (chiral synthesis, organometallic catalysis, continuous flow, hazardous chemistry), not generic capability slides. References from programs that reached the clinic carry more weight than capacity claims.
- GxP status matched to the stage: research-grade is fine for discovery chemistry and exploratory ADME, but IND-enabling tox must be GLP and any clinical API must be GMP. Confirm the specific site holds the certification, and check inspection history with the FDA and EMA if you can.
- Analytical and solid-form capability: method development and validation, impurity and genotoxic-impurity control, polymorph and salt screening, and reference-standard qualification. Weak analytics is where small molecule CMC quietly falls apart.
- Capacity and scale that matches your trajectory: reactor sizes, the realistic step from grams to kilos to commercial, and whether the same supplier can carry you through scale-up so you are not re-validating a route at a new site mid-program. For potent compounds, verify HPAPI containment to the right OEL band.
- Regulatory experience: a documented history of supporting INDs and NDAs, writing CMC modules, handling impurity qualification, and surviving inspections. Ask how many of their programs have been referenced in approved filings.
- IP and confidentiality: clear ownership of the route, process improvements, and any supplier-developed know-how, plus how compounds, batch records, and analytical data transfer to you. Settle this in writing before work starts, because the process IP can be as valuable as the molecule.
Frequently asked questions
What is the difference between a small molecule CRO and a small molecule CDMO?
Do I need GLP and GMP for a small molecule program, and when?
How do I handle a high-potency (HPAPI) small molecule?
Can one supplier take my small molecule from discovery all the way to commercial supply?
What does it cost to make a clinical batch of small molecule API?
How does sourcing small molecule suppliers through BioBridgeX work?
Source Small Molecule work with one contract
Compare transparent quotes from qualified Small Molecule CRO and CDMO vendors, then contract once. Free for buyers.
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