Bioconjugation CDMO Services

From Concept → Development → Scalable GMP Manufacturing

We focus on development and scale-up of oligonucleotide, peptide, and ADC bioconjugates. Our role is to build GMP-ready, manufacturable processes under GLP and ISO 13485 that can be smoothly transferred into your preferred GMP manufacturing network.

GLP Aligned
ISO 13485
Oligo, Peptide & ADC
Process Development & Scale-Up

End-to-End Bioconjugation Development & Scale-Up

Bio-Synthesis provides dedicated bioconjugation process development for programs transitioning from discovery toward regulated manufacturing. Our expertise spans oligonucleotide, peptide, and ADC conjugates, applying structured development principles that embed manufacturability, scalability, and analytical readiness from the very beginning.

Whether you’re evaluating a novel conjugation pathway, optimizing reaction conditions, or preparing for GMP technology transfer, we focus on delivering a controlled, reproducible, and scale-appropriate bioconjugation process tailored to your modality and program needs.

  • Proven capabilities across oligo, peptide, and ADC bioconjugates.
  • An engineering-driven development approach supported by scalability and robustness studies.
  • Process and documentation packages built for GMP implementation, quality compliance, and lifecycle control.
Concept → Development → Scale

A clear, staged path from early feasibility to pilot scale and GMP-ready process documentation.

Stage I
Concept & Feasibility
Stage II
Process Development
Stage III
Scale-Up & Tech Transfer
  • Purpose-built for oligo, peptide and ADC programs.
  • GLP / ISO 13485 quality mindset across all stages.
  • Deliverables structured as a GMP-ready process package.

Concept & Route Selection

Early input on conjugation chemistry, linker options and manufacturability risk so you start with a realistic plan.


Process Development

Build, optimize and characterize robust bioconjugation processes with integrated analytics and impurity control.


Scale-Up & Tech Transfer

Translate lab-scale processes to pilot scale and deliver a GMP-ready package for your chosen manufacturing partner.

Bioconjugation Modalities We Support

Our bioconjugation development platform is built for oligonucleotides, peptides and antibody–drug conjugates (ADCs), with process engineering and analytics tuned to each modality’s unique challenges.

Oligonucleotide Conjugates
Oligo Bioconjugation

Development and scale-up of oligonucleotide conjugates for delivery, targeting and diagnostics.

  • siRNA, ASO, DNA/RNA and aptamer conjugates.
  • Lipid, GalNAc, peptide, polymer and small-molecule attachments.
  • Click chemistry, thiol–maleimide, amide and enzymatic approaches.
  • Purification strategies (chromatography, TFF, desalting) engineered for scale.
Peptide Conjugates
Peptide Bioconjugation

Site-aware conjugation of functional and targeting peptides, optimized for potency, solubility and manufacturability.

  • Targeting, CPP and receptor-binding peptides.
  • PEGylation and multi-arm architectures.
  • Orthogonal protection and site-selective chemistry.
  • Scale-up of preparative HPLC and membrane-based purification.
ADC & Complex Conjugates
ADC Process Development

Early-stage ADC and complex protein–drug conjugation processes built for transfer into high-potency GMP facilities.

  • Cysteine and lysine-based conjugation strategies.
  • DAR control and aggregation minimization.
  • Linker selection (cleavable vs non-cleavable) with stability evaluation.
  • Non-GMP development and pilot-scale production with GMP-ready documentation.

Bioconjugation Development Workflow

Our workflow is built for high transparency and predictable decision points. Each phase has defined deliverables, so you always know where your bioconjugation program stands and what’s required to move ahead.

From Idea to GMP-Ready Process
1. Concept & Feasibility

We evaluate your target, carrier, payload and intended use to define a realistic conjugation strategy.

  • Linker and conjugation route evaluation.
  • Feasibility experiments and risk assessment.
  • High-level process design and success criteria.
2. Process Development

We build a robust base process, focusing on reproducibility and control of critical quality attributes.

  • Optimization of stoichiometry, temperature, pH and time.
  • Impurity and aggregation profiling.
  • Development of in-process and release analytics.
3. Process Optimization

Using data-driven tools (including DoE where appropriate), we tighten process ranges and improve performance.

  • Designed experiments for robustness and yield.
  • Establishment of CPPs and CQAs.
  • Scalability and equipment mapping studies.
4. Scale-Up & Pilot Production

We translate the optimized process to larger equipment, generating material for preclinical or diagnostic use and validating scale-dependent behavior.

  • Mixing, mass transfer and hold-time evaluations.
  • Scale-up of purification and polishing operations.
  • Pilot-scale non-GMP batches and stability assessments.
5. GMP Tech Transfer

We prepare a complete, GMP-ready package so your manufacturing partner can implement the process efficiently.

  • Process description and control strategy.
  • Batch records, equipment lists and bill of materials.
  • Analytical method package and development history.
What You Receive at the End of Development

Every project is structured so that you leave with more than just data – you receive a GMP-ready process asset.

  • Locked process flow diagram and parameter ranges.
  • Defined CPPs/CQAs and associated risk assessment.
  • Fully documented experiments and decision rationale.
  • Analytical methods suitable for method transfer and validation.
  • Technology transfer dossier formatted for GMP manufacturers.

We do not operate as a GMP manufacturing site. Instead, our core strength is delivering high-quality, GMP-ready bioconjugation processes that slot efficiently into your existing CMO/CDMO network.

Quality, Compliance & Documentation

Our development and scale-up activities are executed within a quality framework built on GLP principles and ISO 13485-compliant systems, making it easier to integrate our work into regulated pipelines.

GLP-Oriented Development
  • Structured study plans and protocols.
  • Traceable recording of materials, equipment and conditions.
  • Data integrity and audit-ready documentation.
ISO 13485 Foundation
  • Design control mindset for critical processes.
  • Change control, deviation handling and risk management.
  • Documentation aligned with diagnostic and device applications.
Regulatory-Ready Outputs
  • Process and analytical packages that support CMC sections.
  • Supportive data sets for comparability and lifecycle management.
  • Flexible documentation formats for your internal templates.

Why Work With Our Bioconjugation CDMO

We combine deep bioconjugation chemistry with process engineering discipline to create scalable, manufacturable solutions across oligo, peptide and ADC programs.

Modality Depth

Experience across oligo, peptide and ADC bioconjugates, enabling consistent decision-making and platform reuse.

Scale-Up Mindset

Every experiment is designed with later stages in mind – equipment, materials and operations that can scale.

Transparent Collaboration

Clear, science-driven communication with shared data, regular checkpoints and decision gates.

GMP-Ready Outcomes

We deliver processes and documentation purpose-built for handoff to your GMP manufacturing partners.

Contact

Discuss Your Bioconjugation Development & Scale-Up Needs

Share your target modality (oligo, peptide or ADC), project stage and intended use. Our team will review your requirements and propose a tailored development and scale-up plan.

Feasibility & early concept Process optimization Scale-up & tech transfer
  • Bioconjugate type and modality (e.g., GalNAc–siRNA, peptide–drug, ADC).
  • Intended indication or application (therapeutic, diagnostic, research).
  • Current project stage and main technical challenges.
  • Desired timelines and internal/external manufacturing strategy.
Phone: +1-972-420-8505
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Why Choose Bio-Synthesis

Trusted by biotech leaders worldwide for over 40+ years of delivering high quality, fast and scalable synthetic biology solutions.