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Precision Peptide Innovation

ChairBio delivers cutting-edge peptide synthesis, protein expression, and antibody preparation services with over 17 years of expertise in biomedical research solutions.

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17+

Years of Innovation & Research

300+

Core Technologies Mastered

30,000+

Global Customers Served

About ChairBio

Established in October 2008, ChairBio (formerly ChinaPeptides/QYAOBIO) is a pioneering technological enterprise dedicated to peptide synthesis, protein expression, and antibody preparation. With over 17 years of relentless innovation, we uphold the spirit of craftsmanship—working attentively and honestly to deliver excellence in every molecule.

We are one of the earliest companies in China to adopt polypeptide solid-phase synthesis (SPPS) technology, providing one-stop, diversified services for biomedical research institutions, pharmaceutical developers, and academic laboratories worldwide.

  • ISO-compliant quality assurance
  • Serving 50+ countries globally
  • End-to-end R&D support
ChairBio Laboratory

Our Products

High-purity peptides, recombinant proteins, antibodies, and antigens designed for precision research and development.

Catalogue Polypeptide

Catalogue Polypeptide

Standardized, high-purity peptides for immediate use in assays, diagnostics, and screening.

  • Purity: ≥95%, ≥98%
  • Length: 2–100 amino acids
  • Scale: mg to gram
β Amyloid Peptide

β Amyloid Peptide

Critical for Alzheimer’s disease research, available in multiple isoforms and modifications.

  • Aβ(1-40), Aβ(1-42)
  • Fluorescently labeled options
  • High solubility formulations
Antibacterial Peptide

Antibacterial Peptide

Designed for antimicrobial studies and novel therapeutic development.

  • Customizable sequences
  • Stability-enhanced variants
  • Available with PEGylation
Cosmetic Peptide

Cosmetic Peptide

Bioactive peptides for skincare and anti-aging formulations.

  • Matrixyl™ analogs
  • Collagen-stimulating
  • Stable, water-soluble
Recombinant Proteins

Recombinant Proteins

High-yield expression systems for functional and structural studies.

  • Prokaryotic & mammalian systems
  • His, GST, or FLAG tags
  • Endotoxin-free options
PSMA Inhibitor

PSMA Inhibitor

Targeted compounds for prostate cancer imaging and therapy research.

  • High binding affinity
  • Available with chelators
  • Custom conjugation
Tumor Targeting Peptide

Tumor Targeting Peptide

Engineered for selective binding to cancer cell markers.

  • RGD, NGR motifs
  • Conjugatable payloads
  • Validated in vivo
Labeling Antibody

Labeling Antibody

Precisely conjugated antibodies for detection and imaging.

  • Fluorescent (FITC, Alexa)
  • Enzymatic (HRP, AP)
  • Biotinylated options

Core Services

From gene to protein, we offer comprehensive, customizable solutions for your research pipeline.

Custom Peptide Synthesis

Tailored sequences up to 100 amino acids with modifications including PEGylation, biotinylation, and fluorescent labeling.

Protein Expression

Prokaryotic, mammalian, yeast, and baculovirus systems for soluble, active, and properly folded proteins.

Antibody Customization

Monoclonal and polyclonal antibody development with rapid turnaround and high specificity.

Gene Synthesis

Codon-optimized gene constructs with cloning and vector design for seamless expression.

Peptide Library

High-throughput screening libraries including phage display, positional scanning, and random libraries.

Quality Assurance

HPLC, MS, amino acid analysis, endotoxin testing, and stability studies for full compliance.

Frequently Asked Questions

Get answers to common inquiries about our products and services.

What is your typical turnaround time for custom peptides?

Standard synthesis takes 2–3 weeks, with express options available for urgent projects.

Do you offer GMP-grade peptides?

Yes, we provide research-grade and pre-GMP peptides with full documentation and QC reports.

Can you synthesize peptides longer than 50 amino acids?

Yes, we routinely synthesize peptides up to 100 amino acids with high purity and yield.

What expression systems do you use for proteins?

We offer E. coli, mammalian (HEK293, CHO), yeast (Pichia), and baculovirus-insect cell systems.

How do you ensure antibody specificity?

We perform ELISA, Western blot, and immunohistochemistry validation with customer-provided antigens.

Get in Touch

For inquiries, quotes, or technical support, visit our official website to connect with our team.

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