API Synthesis CROs in United States

Global leader in drug delivery technologies and development solutions. Catalent provides formulation, development, and manufacturing services for pharmaceuticals, biologics, and consumer health products.

Global CDMO with 30+ years delivering development and manufacturing for biologics, cell therapies, viral vectors, and mRNA across US, European, and Asian facilities.

Contract research and manufacturing organization offering drug discovery, API synthesis, analytical development, and formulation services to global pharma and biotech.

Preclinical ADME and pharmacokinetic service provider now part of Pharmaron. Specializes in in vitro and in vivo DMPK, drug transporter studies, and metabolite identification.

San Diego-based CDMO providing small and large molecule API manufacturing, oligonucleotide synthesis, and ADC conjugation services from pre-clinical through commercial scale.

CDMO providing custom API development and manufacturing, solid dose and sterile formulation, analytical testing, and clinical and commercial supply from multiple US facilities.

Global CRO/CDMO providing integrated drug discovery and development services including medicinal chemistry, ADME/PK, pharmacology, and process chemistry from US and China operations.

Leading CDMO providing API development and manufacturing services including custom synthesis, generic APIs, and advanced intermediates from facilities across the US and Europe.

Labcorp's contract development and manufacturing arm providing formulation development, analytical services, stability testing, and clinical trial manufacturing for small molecules and biologics.

CDMO offering integrated drug discovery, development, and manufacturing services including API production, drug product manufacturing, and analytical services from facilities in the US, Europe, and India.

Top-tier biologics CDMO offering cell culture, microbial fermentation, and cell and gene therapy manufacturing across US sites supporting 128+ regulatory approvals.

CRO providing integrated drug discovery and development services including ADME/PK, bioanalytical, CMC, and clinical services with operations in the US and China.

Major global CDMO providing end-to-end pharmaceutical development and manufacturing services including drug substance, drug product, and commercial manufacturing under the Thermo Fisher Scientific umbrella.

US-based biomanufacturing CDMO founded in 2020 delivering end-to-end development and manufacturing for biologics, mRNA, and cell and gene therapy across a domestic facility network.

Contract research organization providing discovery, preclinical, and development chemistry services including API synthesis, safety pharmacology, and medicinal chemistry.

Global CDMO with integrated small molecule, biologics, and gene therapy manufacturing including proprietary viral vector platforms across the US, Europe, and Asia.