GLP-1 & Incretin Multi-Agonists · Research use only

Mazdutide Research Peptide (RUO)

CAS 2259884-03-0 · 4563.14 g/mol · >99% purity

Mazdutide (CAS 2259884-03-0) is a 34-amino-acid acylated GLP-1 / glucagon dual receptor agonist and oxyntomodulin analogue, approved by China's NMPA in 2025 and investigational elsewhere, not approved by the US FDA or EMA. Winhycare Pharma supplies Mazdutide for laboratory research use only, at >99% purity with QC documentation. It is not for human or veterinary use.

By Kareem Ahmed Basha, Director & Chief Scientific Officer · Reviewed by Nisar Mohammed, Founder & Managing Director · Updated

Specification card for Mazdutide research peptide: CAS 2259884-03-0, >99% purity, research use only
Research use only. Winhycare Pharma supplies Mazdutide research peptide for laboratory research only. It is not for human or veterinary use and must not be used in medicinal products. We do not provide dosing or usage advice. Approved as an active ingredient by China's NMPA (chronic weight management, 2025; glycaemic control in type 2 diabetes, 2025). Outside China it remains investigational and in late-stage clinical development, not yet approved by the US FDA or EMA.
CAS Number
2259884-03-0
Molecular Formula
C210H322N46O67
Molecular Weight
4563.14 g/mol
Drug Class
GLP-1 / glucagon dual receptor agonist

What is Mazdutide?

Mazdutide is a long-acting dual agonist of the GLP-1 (glucagon-like peptide-1) receptor and the glucagon receptor (GCGR). It is a synthetic 34-amino-acid analogue of the gut hormone oxyntomodulin, modified for extended half-life: an Aib (2-aminoisobutyric acid) substitution at position 2 confers resistance to DPP-4 degradation, and acylation with a C20 (eicosanedioic) fatty di-acid attached to lysine 20 through an AEEA-AEEA-γGlu linker drives strong albumin binding and an extended half-life. By engaging both incretin and glucagon pathways, the molecule is studied in obesity and type 2 diabetes research.

Mazdutide (CAS 2259884-03-0, molecular formula C210H322N46O67, ~4563.14 g/mol) is a lyophilised peptide. Its regulatory status varies by region: it has been approved by China's NMPA for chronic weight management and for glycaemic control in type 2 diabetes, while outside China it remains investigational and in late-stage clinical development. It is not yet approved by the US FDA or EMA.

How Mazdutide Is Produced & Characterised

Mazdutide is a synthetically demanding acylated peptide: the 34-mer oxyntomodulin backbone, the non-proteinogenic Aib residue and the lipid side-chain conjugation all create opportunities for deletion sequences, diastereomers and incomplete acylation. As an industry reference point, peptides of this class are typically prepared by optimised Fmoc solid-phase peptide synthesis (SPPS) with controlled side-chain conjugation, then purified on preparative dynamic axial compression (DAC) HPLC columns to resolve the target sequence from closely related impurities.

Production campaigns for this peptide class generally progress from optimisation runs through kilogram and multi-kilogram scale, finished by lyophilisation to a stable, uniform powder. Repeatable batch-to-batch consistency depends on process development, technology transfer and scale-up controls, which is why molecules such as mazdutide are commonly advanced from clinical to commercial scale through specialist contract development and production routes.

Regulatory Context & Handling Reference

The regulatory pathway for mazdutide differs by jurisdiction. It has been approved as an active ingredient by China's NMPA, for chronic weight management and for glycaemic control in type 2 diabetes (both 2025), while outside China it remains investigational and in late-stage clinical development, and is not yet approved by the US FDA or EMA. Where a peptide active ingredient is filed for regulated use, dossiers such as a US-DMF Type II and CTD Module 3 CMC sections, ICH Q2(R1) analytical validation packages and stability data are the standard supporting documentation referenced by finished-product submissions (IND/NDA/ANDA where applicable).

Research supply from Winhycare Pharma

Winhycare Pharma supplies research-grade Mazdutide to research organisations and individual researchers for research and development purposes. Material is supplied at high purity (>99%) under stringent quality control with QC documentation, in secure packaging through global standard logistics, with dedicated technical assistance from our team. We focus on consistent quality and purity, reliable and timely supply, confidential and professional service, and long-term partnerships.

Research use only. Not for human or veterinary use, and not for use in food, drugs, medical devices or cosmetics.

To enquire, tell us the quantity you need, the purity grade, the documentation you require and the destination country. The buyer is responsible for complying with the import and use regulations that apply to Mazdutide in their country.

Mazdutide: Specifications

Compound Mazdutide
CAS Number 2259884-03-0
Molecular Formula C210H322N46O67
Molecular Weight 4563.14 g/mol
Sequence 34 amino acids, Lys20 acylated (C20 di-acid side chain)
Drug Class GLP-1 / glucagon dual receptor agonist
Appearance White to off-white lyophilised powder
Purity >99% (research grade)
Typical synthesis route Fmoc SPPS + DAC prep-HPLC purification
Regulatory Status Approved by China's NMPA (2025); investigational outside China (not FDA/EMA approved)
Storage Typically stored at -20°C, protected from light & moisture
Form White to off-white lyophilised powder
Intended use Research use only (RUO)

Supplied for research use only: not for human or veterinary use, and not a GMP API. Regulatory status: Approved as an active ingredient by China's NMPA (chronic weight management, 2025; glycaemic control in type 2 diabetes, 2025). Outside China it remains investigational and in late-stage clinical development, not yet approved by the US FDA or EMA.

Research guides

Articles in the Peptide Research Library that cover Mazdutide.

  • Mazdutide: research overviewMazdutide (IBI362, LY3305677) is a 34-amino-acid acylated oxyntomodulin analogue that activates both the GLP-1 receptor and the glucagon receptor. China's NMPA approved it for chronic weight management in June 2025 and for glycaemic control in type 2 diabetes in September 2025. Elsewhere it remains investigational.
  • GLP-1 receptor agonists explained: how they work, the full list, and where research is headingGLP-1 receptor agonists are peptides, and now one small molecule, that activate the receptor for the gut hormone glucagon-like peptide-1. The receptor raises cAMP in beta cells, increasing insulin secretion only when glucose is high, while also suppressing glucagon, slowing gastric emptying and reducing food intake. Dual and triple agonists add GIP or glucagon receptor activity.
  • Survodutide: what it is, how it works and what studies have foundSurvodutide (BI 456906) is an investigational 29-amino-acid acylated peptide that activates both the glucagon receptor and the GLP-1 receptor. It has completed phase 3 obesity trials (SYNCHRONIZE-1, SYNCHRONIZE-2 and SYNCHRONIZE-MASLD) and is in phase 3 for MASH. No regulator had approved it as of October 2026.

Mazdutide: Frequently Asked Questions

What is Mazdutide?

Mazdutide is a long-acting dual receptor agonist that activates both the GLP-1 (glucagon-like peptide-1) receptor and the glucagon receptor (GCGR). It is a synthetic 34-amino-acid analogue of the gut hormone oxyntomodulin, engineered with an Aib substitution at position 2 and a C20 fatty di-acid side chain for an extended half-life.

What is the CAS number and molecular weight of Mazdutide?

Mazdutide's CAS number is 2259884-03-0, its molecular formula is C210H322N46O67, and its molecular weight is approximately 4563.14 g/mol. It is a 34-amino-acid oxyntomodulin analogue acylated on lysine 20 with a C20 fatty di-acid side chain via an AEEA-AEEA-γGlu linker.

Is Mazdutide approved?

Mazdutide has been approved as an active ingredient by China's NMPA for chronic weight management and for glycaemic control in type 2 diabetes (both 2025). Outside China it remains investigational and in late-stage clinical development, and is not yet approved by the US FDA or EMA.

What class of peptide is Mazdutide?

Mazdutide belongs to the GLP-1 and incretin multi-agonist class. Specifically, it is a GLP-1 / glucagon dual receptor agonist. Structurally it is an acylated oxyntomodulin analogue, related to other incretin-based peptides such as tirzepatide and retatrutide.

What is Mazdutide being studied for?

By engaging both the incretin (GLP-1) and glucagon signalling pathways, mazdutide is studied for its effects on body weight and glycaemic control. Its principal areas of investigation are obesity (chronic weight management) and type 2 diabetes.

How is Mazdutide produced?

Peptides of this class are typically produced by optimised Fmoc solid-phase peptide synthesis (SPPS) with controlled lipid side-chain conjugation, followed by preparative dynamic axial compression (DAC) HPLC purification and lyophilisation to a stable powder. This reflects the general production approach reported for acylated peptide active ingredients.

Is Mazdutide sold for human use?

No. Winhycare Pharma supplies Mazdutide for research use only (RUO), for laboratory research and development. It is not for human or veterinary use, and not for use in food, drugs, medical devices or cosmetics. Although Mazdutide is an approved active ingredient in some markets, research-grade material is not a medicinal product.

What purity is Mazdutide supplied at?

Research-grade Mazdutide is supplied at high purity (>99%), produced under stringent quality control and accompanied by QC documentation. State any specific purity or documentation requirement in your enquiry.

How do I order Mazdutide for research?

Send an enquiry with the quantity, purity, documentation you need and the destination country, and our team will reply with dedicated technical assistance. The buyer is responsible for complying with the import and use regulations for Mazdutide in their country.

Sources

  1. Mazdutide: substance record, CAS Common Chemistry
  2. Mazdutide, Wikipedia

Request Mazdutide for research use

Tell us the quantity, purity and documentation you need, the delivery country and the intended research use. Supplied for research use only; not for human or veterinary use. Need a different sequence? See custom peptide synthesis.

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