HPLC purity
Reverse-phase HPLC with UV detection; purity target reported per lot with related-substance reporting on request.
B7-33HPLC ≥ 99%MS confirmed2mg
Vial illustrations reflect supplied lyophilized format. Distribution scope and destination market confirmed before invoicing.
| Compound | B7-33 |
|---|---|
| CAS number | 1818415-56-3 |
| Molecular formula | C131H229N41O36S |
| Molecular weight | 2986.58 g/mol |
| Sequence | VIKLSGRELVRAQIAISGMSTWSKRSL |
| Form | Lyophilized powder, glass vial |
| Purity target | ≥ 99% by HPLC |
| Vial formats | 2mg / 10mg |
| Documentation | Batch-linked COA + HPLC chromatogram + MS identity record for every production lot |
| Distribution scope | Research use, worldwide |
| Storage | Store lyophilized powder at -20°C, protected from light and moisture; short-term ambient shipping is tolerated. After reconstitution, store at 2-8°C and use within a short period. For research use only. |
MOQ & lead time
| Tier | Quantity | Lead time |
|---|---|---|
| OEM lot | 50 kits (500 vials) | 3–7 days |
| Production lot | 500–1,000 vials | 10–14 days |
| OEM repeat | 1,000+ vials | 14–18 days, scheduled |
Supplied as a research-use peptide. Every quote confirms current-batch COA, purity, destination market and buyer track before invoicing.
Overview
About B7-33.
B7-33 is a single-chain peptide corresponding to residues 7-33 of the B-chain of human relaxin-2 (H2 relaxin), engineered to reproduce relaxin activity without the two-chain, disulfide-linked structure of the native hormone. It functions as a functionally selective ("biased") agonist of the relaxin family peptide receptor 1 (RXFP1), preferentially engaging the pERK1/2 signalling arm over cAMP accumulation, and is used as a research probe in studies of tissue fibrosis and cardiac remodeling.
Documentation
Batch documentation support for B7-33 lots.
batch-linked COA, HPLC chromatogram and MS identity record for every production lot. Distribution scope confirmed before invoicing.
MS identity
Mass spectrometry identity confirmation against the B7-33 reference profile.
Lot traceability
Compound prefix and lot serial printed on the vial label and repeated in the document pack and carton.
FAQ
B7-33 — frequently asked by B2B buyers.
What is B7-33 and how is it classified?
B7-33 is a synthetic 27-residue single-chain peptide derived from the B-chain (residues 7-33) of human relaxin-2. It is classified as a functionally selective agonist of the relaxin family peptide receptor 1 (RXFP1) and is supplied strictly as a research-use / reference material, not for consumer, therapeutic or diagnostic use.
What documentation ships with each batch?
Each lot is supplied with a Certificate of Analysis (COA) reporting HPLC purity and identity confirmation by mass spectrometry (MS). Additional documentation such as residual-solvent, endotoxin (only if specifically ordered and tested), or extended analytical data can be provided on request for qualified B2B accounts.
What vial sizes and minimum order quantity does Pepti offer?
B7-33 is stocked in 2 mg and 10 mg lyophilized vials, with a standard MOQ of 50 kits (500 vials). Bulk and custom fill sizes are available on RFQ for OEM and private-label programs.
What purity can I expect, and how is it verified?
Research-grade B7-33 is typically produced to a high HPLC purity specification, with the exact per-lot figure stated on the accompanying COA and confirmed by MS identity testing. Target purity for a specific program can be confirmed on RFQ.
Can Pepti supply B7-33 for OEM or private-label projects?
Yes. As a China-based manufacturer and private-label OEM supplier, Pepti supports custom vialing, labeling, and documentation for B2B buyers and research distributors. All material is sold for laboratory research use only, subject to the buyer's local regulatory compliance.
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