---
title: CDMOs offering Bioconjugation Services with Oligonucleotide
path: /explore/bioconjugation/oligonucleotide
companies_count: 8
---

# CDMOs offering Bioconjugation Services with Oligonucleotide

8 published CDMOs match Bioconjugation Services and Oligonucleotide.

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

Capabilities that show up most often in this set: CMC Analytical Development, Oligonucleotide Manufacturing, Process Development, API Synthesis & Manufacturing, and Quality Control Testing.

## Matching companies

- [ADViRNA](/companies/advirna)
  - ADViRNA provides oligonucleotide design, synthesis, and screening services with proprietary chemical modifications and conjugation technologies for therapeutic siRNA and ASO development.
- [BOC Sciences](/companies/boc-sciences)
  - BOC Sciences is a custom lab chemical supplier offering bulk compounds, custom synthesis, cGMP manufacturing, analytical services, and specialized drug delivery and bioconjugation platforms for pharmaceutical and biotechnology clients.
- [Bio-Synthesis, Inc.](/companies/biosyn)
  - Custom DNA, RNA, siRNA, and ASO oligonucleotide synthesis, custom peptide manufacturing, and project-specific bioconjugation. Support extends from research through analytical QC, process development, and scale-up.
- [Dalton Pharma Services](/companies/dalton)
  - Health Canada–approved and FDA-inspected cGMP contract manufacturer offering integrated drug discovery, development, and manufacturing services including custom synthesis, API production, formulation development, and sterile fill-finish for vials, syringes, and cartridges.
- [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.
- [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.
- [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.