---
title: Bioconjugation Services CDMOs in United States
path: /services/bioconjugation/us
companies_count: 9
---

# Bioconjugation Services CDMOs in United States

9 published CDMOs match Bioconjugation Services in United States.

Locations in this set include United States, United Kingdom, China, Canada, Germany, and India.

Capabilities that show up most often in this set: Biologics (Other), Biologics (Monoclonal Antibodies), Antibody-Drug Conjugate (ADC), Small Molecule, and Peptide.

## Matching companies

- [Abzena](/companies/abzena)
  - Fully integrated biologics and bioconjugates CDMO+CRO offering drug design, development, and GMP manufacturing for antibodies, ADCs, AOCs, RDCs, and vaccines from discovery through commercial scale.
- [GBI Biomanufacturing](/companies/gbi-biomanufacturing)
  - Full-service biologics CDMO offering integrated development and manufacturing services including cell banking, upstream/downstream processing, bioconjugation, aseptic fill-finish, and regulatory support for complex biopharmaceuticals.
- [Gannet Biochem](/companies/gannetbiochem)
  - Gannet BioChem is a specialized CDMO focused on activated polymer, PEG, and bioconjugation services for complex therapeutics, from early development through cGMP manufacturing. It operates facilities in Huntsville and Arab, Alabama.
- [National Resilience](/companies/resilience)
  - End-to-end CDMO specializing in complex modalities including cell, gene, and RNA-based therapies with North American manufacturing facilities and development capabilities.
- [Pharmaron](/companies/pharmaron)
  - Premier life science CRO and CDMO offering integrated R&D and manufacturing across drug discovery, preclinical, clinical development, and commercialization for small molecules, biologics, and cell & gene therapies. 25,000+ employees across China, US, and UK.
- [Porton](/companies/portonpharma)
  - Porton is a global CDMO offering integrated manufacturing and development services across small molecules, peptides, oligonucleotides, biologics, and conjugates with specialized capabilities in flow chemistry, biocatalysis, and advanced therapies.
- [Simtra BioPharma Solutions](/companies/simtra-biopharma-solutions)
  - Simtra BioPharma Solutions is a CDMO specializing in sterile injectable development and manufacturing, including formulation, lyophilization, fill/finish, and bioconjugation services for clinical and commercial products.
- [Sterling Pharma Solutions](/companies/sterlingpharmasolutions)
  - Small molecule CDMO offering comprehensive API development and manufacturing from discovery through commercial cGMP production, with specialized expertise in complex and hazardous chemistries and ADC bioconjugation.
- [Syngene International](/companies/syngeneintl)
  - Innovation-led CRDMO offering integrated scientific services from early discovery through commercial manufacturing, with cGMP-compliant facilities, 5,200+ scientists, and a new 50,000-liter single-use bioreactor capacity in the U.S.