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YiSunBio Facility

Innovating Pharma Chemistry

Tiantai Yisheng Biochemical Technology Co., Ltd. – Trusted manufacturer of high-purity pharmaceutical intermediates, APIs, and amino acid derivatives for global healthcare innovation.

About YiSunBio

Tiantai Yisheng Biochemical Co., Ltd. was established in July 2015 and is located in the Potang Industrial Zone, Tiantai, China. We specialize in the research and development of pharmaceutical raw materials and intermediates, with a strong focus on chiral synthesis through biosynthesis and asymmetric synthesis.

Our core product lines include intermediates for Ibrutinib, Duloxetine, Sitagliptin, Perindopril, Lifitegrast, and other key therapeutics across oncology, neurology, cardiovascular, diabetes, and antiviral fields. With over 80 skilled professionals—including PhDs, master’s, and bachelor’s degree holders—we have successfully industrialized multiple proprietary technologies.

80+
Team Members
2015
Founded
Laboratory Research

Our Services

We offer comprehensive solutions for pharmaceutical development and manufacturing, tailored to meet the evolving needs of global partners.

CMO Services

Contract manufacturing of APIs and intermediates with scalable production capacity, strict process control, and full regulatory compliance.

CRO Services

Custom research and process development for novel intermediates and APIs, including route scouting, optimization, and scale-up.

Technical Service

Full technical support including analytical method development, impurity profiling, and regulatory documentation for global submissions.

Featured Products

High-purity pharmaceutical intermediates and raw materials for oncology, diabetes, cardiovascular, neurology, and antiviral therapies.

Ibrutinib Intermediate

Ibrutinib Intermediate

CAS: Available upon request

Key building block for BTK inhibitors used in hematologic cancers.

Sitagliptin Intermediate

(R)-3-(Boc-Amino)piperidine

CAS: 309956-78-3 | C10H20N2O2

Critical chiral intermediate for DPP-4 inhibitors in diabetes treatment.

Duloxetine Intermediate

Duloxetine Hydrochloride Intermediate

High-purity chiral compound

Used in synthesis of SNRI antidepressants and chronic pain management drugs.

Lifitegrast Intermediate

Lifitegrast Intermediate

Immunomodulatory compound

Intermediate for dry eye disease therapeutics with high stereochemical purity.

Amino Acid Derivatives

D-Lysine

CAS: 923-27-3 | C6H14N2O2

Non-natural amino acid for peptide synthesis and specialty pharmaceuticals.

Antiviral Intermediates

Dolutegravir Intermediate

HIV integrase inhibitor

High-purity intermediate for antiretroviral therapy in AIDS treatment.

Cardiovascular

Valsartan & Intermediates

ARB class antihypertensives

Scalable production of sartan-class intermediates with strict impurity control.

Industrial Monomers

Polyimide Monomer

High-performance polymer

Specialty chemical for aerospace, electronics, and high-temperature applications.

Neurological Agents

Lacosamide Intermediate

Anticonvulsant building block

Chiral intermediate for epilepsy and neuropathic pain medications.

View Full Product Catalog

Quality Assurance

At YiSunBio, quality is the foundation of everything we do. Our QA/QC systems are designed to meet international standards, ensuring consistency, purity, and regulatory compliance across all batches.

  • GMP-compliant manufacturing processes
  • Advanced analytical instrumentation (HPLC, GC, NMR, MS)
  • Full documentation and regulatory support (DMF, CEP, etc.)
  • Strict impurity profiling and control strategies
Quality Control Lab

Get in Touch

For inquiries about our products, pricing, or custom synthesis services, please contact us directly.

Phone: +86-576-83869808
Mobile: +86-18958639818
Email: sales@yisunbio.com
Email: export@yisunbio.com
Fax: +86-576-83957825
Contact Person: Mr. Hong

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