Biologics and Conjugates CDMO Services
Porton one-stop Biologics and Conjugates CDMO Service Platform offers comprehensive services for biologics and conjugate products (ADC, AOC, DAC, PDC, and RDC), including early research, process development and manufacturing, formulation development and drug product manufacturing, analytical method development and validation, and global new drug regulatory affairs support.
50+
Experienced Scientists
50+
Projects (IND/P1/P2/P3/NDA)
40+
Customers
Our Services
Conjugates
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ADC
Antibody-Drug Conjugate -
AOC
-
DAC
-
PDC
-
RDC
Targeting-vehicle
Antibody
Peptide
Small Molecule
Linker
Cys (-SH): S-S, Maleimide Group (mc, mcc, etc.)
Lys (-NH2): Activated Acid (CO-OSu, etc.)
Short Peptide (VC, GFGG, etc.)
PEG
Click Chemistry
pH-Sensitivity (HN-CH2-O-, C+N-NH=CO-, Hydrazine, Carbonate)
Multi Branches
Payload
Cytotoxic Drugs
Oligonucleotides
Radionuclides
Fluorescers
PROTAC
Early Stage Development
mg–g Scale Library
Developability Assessment
Process Development
Payload-Linker Process Development
Targeting-vehicle Process Development
Bioconjugation and Purification Process Development
DP Formulation & Process Development
Manufacturing
Payload-Linker Manufacturing
Targeting-vehicle Manufacturing
DS Manufacturing
DP Manufacturing
Analytical Development and QC
Analytical Method Development & Validation
Release Testing
Stability Study
Registration Services
CMC Filing Dossier
Supporting and Communication During Filing Process
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ADC
Antibody-Drug Conjugate -
AOC
-
DAC
-
PDC
-
RDC
Antibody
Peptide
Small Molecule
Cys (-SH): S-S, Maleimide Group (mc, mcc, etc.)
Lys (-NH2): Activated Acid (CO-OSu, etc.)
Short Peptide (VC, GFGG, etc.)
PEG
Click Chemistry
pH-Sensitivity (HN-CH2-O-, C+N-NH=CO-, Hydrazine, Carbonate)
Multi Branches
Cytotoxic Drugs
Oligonucleotides
Radionuclides
Fluorescers
PROTAC
mg–g Scale Library
Developability Assessment
Payload-Linker Process Development
Targeting-vehicle Process Development
Bioconjugation and Purification Process Development
DP Formulation & Process Development
Payload-Linker Manufacturing
Targeting-vehicle Manufacturing
DS Manufacturing
DP Manufacturing
Analytical Method Development & Validation
Release Testing
Stability Study
CMC Filing Dossier
Supporting and Communication During Filing Process
Porton Sites

Shanghai Pudong R&D and Manufacturing Site
- DS & DP
- GMP
- Non-HP & HP
- Antibody (200–500 L)
- Bioconjugation (10–200 L)

Cranbury R&D and Manufacturing Site
- DS
- Non-GMP & GMP
- Non-HP & HP
- Payload-Linker (10— 100 L)
- Bioconjugation (10 L, 200— 500 L) — In Planning

Shanghai Minhang R&D Center
- DS
- Non-GMP
- Non-HP & HP
- Payload-Linker (20 L)

Shanghai Fengxian Manufacturing Site
- DS
- GMP
- Non-HP & HP
- Payload-Linker (100 L)
Case Studies
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Dual-Payload Conjugates: Addressing the CMC Challenges of a New Therapeutic Approach
Dual-payload conjugates—two mechanistically distinct payloads carried on a single targeting vehicle—represent the next technological frontier beyond conventional ADCs.
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PMO Therapeutics: Technical Review and Manufacturing Platform Capabilities
This article offers a systematic overview of PMO drug technology covering underlying principles, manufacturing workflows, and therapeutic prospects.
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Mechanistic Studies in Catalytic Process Development: Supporting Manufacturing Processes and Revealing New Reaction Pathways
Through a case study on loading-dependent chemoselectivity in amide reductions, we demonstrate how first-principles chemical understanding provides the scientific foundation necessary for robust, end-to-end commercial manufacturing control strategies
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Antibody-Oligonucleotide Conjugates: From Conjugation Strategy to Purification and Analytical Control
Antibody-Oligo Conjugate (AOC), as an innovative targeted gene therapy biopharmaceutical, effectively integrates the targeting advantages of monoclonal antibodies and the gene regulatory functions of oligonucleotides, helping address key limitations in the inherent of traditional antibody drugs and nucleic acid drugs, and showing substantial clinical
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FAQ: CMC Development Strategy for Oligonucleotides in AOCs
•How to reduce hydrolysis during SMCC conjugation? •Can SMCC conjugate after hydrolytic ring-opening? •How is OAR1 regulated during random SMCC conjugation? •Which strategy is preferred for siRNA linker conjugation: pre-annealing or post-annealing conjugation?
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Biocatalysis Enables the Efficient Synthesis and Commercial Application of Unnatural Amino Acids (UAAs)
Biocatalysis is a pivotal enabler for the sustainable synthesis of unnatural amino acids. By integrating novel enzyme discovery, multi-enzyme cascades and chemo-enzymatic routes, Porton has established practical capabilities to address industry challenges in substrate specificity and enzyme stability. Moving forward, Porton remains dedicated to bridging the gap between laboratory innovation and industrial-scale application, providing customers with reliable, scalable and atom-efficient solutions for UAA production.
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Dry Particle Coating for the Enhancement of API Flowability and Bulk Density
The mechanism of the dry particle coating and a short description of four coating techniques including comil, LabRAM, a high shear mixer and a jet mill are provided.
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Process Development and Quality Research Strategy for Dual-Payload Conjugated Drugs
What is the mainstream conjugation process for antibodies and siRNA?
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FAQ: Process Development Strategies for AOC Drugs
What is the mainstream conjugation process for antibodies and siRNA?
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Optimization of Synthetic Process and Metal-Chelation Impurity Control Strategy for Complex Peptide-based RDCs
It fully demonstrates the strength of Porton's one-stop RDC service platform, excellent project management capabilities, and efficient production and operation.
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The Perfect Integration of Immobilized Enzymes and Flow Chemistry: A Powerful Booster for the Commercialization of Biocatalysis Technology
Adhering to Porton's core value of “Pursuing Excellence”, the Porton biocatalysis team has designated "enzyme immobilization technology and its industrialization" as a core strategic technology.
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Process Simulation Platform: Enabling Process Development and Scale-up of Active Pharmaceutical Ingredients
The Porton Crystallization team has the capability to perform process simulation of unit operations, including solvent swap, crystallization, filtration and drying.
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News
MoreNews2026-10-24
Porton Shared Complex Bioconjugate Development Strategies at the 17th World ADC San Diego
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News2026-10-22
Simplifying Synthesis with Radical Cross-Coupling: Prof. Phil S. Baran of Scripps Research Lectures at Porton
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News2026-10-09
Porton Successfully Concludes CPHI Milan 2026, Showcasing Integrated CDMO Capabilities and Connecting for Global Pharma Innovation
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News2026-09-29
Porton Recognized by LyncBio Therapeutics for ADC Payload-Linker CMC Capabilities
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News2026-09-01
Porton to Showcase End-to-End CDMO Expertise at CPHI Milan 2026
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News2026-07-03
Porton Delivers Dual-Payload ADC IND, Advancing Next-generation Conjugate Drug Development
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News2026-07-02
Porton Highlights Integrated CDMO Capabilities at BIO International Convention 2026 and Celebrates Porton J-STAR's 30th Anniversary
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News2026-06-25
Porton Concludes Productive Presence at CPHI China 2026
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News2026-03-31
Porton Newsletter - March 2026 Recap
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News2026-03-03
Porton Wins “2025 Best CRO” Award from Daewoong Pharma
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News2026-02-28
Porton Newsletter - February 2026 Recap
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News2026-02-03
Porton Newsletter - January 2026 Recap
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