B7 33

QHY Bioengineering Co., Ltd. is one of the leading manufacturers and suppliers of b7 33 in China. We are committed to providing high quality customized products with competitive price. If you're going to wholesale bulk durable b7 33, welcome to get quotation and free sample from our factory.

We work on B7-33 in our lab. It's a single-chain synthetic peptide, derived from the B chain of human relaxin‑2, with 33 amino acids.

Native relaxin‑2 has two peptide chains held together by disulfide bonds. Keeping those bonds stable while manufacturing is hard. Many researchers get variable results across native relaxin batches. B7-33's single-chain design gets around this problem. In our own lab testing, we saw much less variation between production lots.

This peptide binds selectively to RXFP1 receptors. It activates pERK signaling rather than the more common cAMP pathway. This feature reduces fibrosis, protects blood vessels and supports tissue repair. It does not trigger the wide hormonal changes you see with native relaxin.

We are QHY Bioengineering. Each batch of B7-33 goes through HPLC before shipment. We keep all HPLC raw files and test records. When clients request records for a specific lot, we can pull those files quickly. Every batch we ship reaches over 99% purity. Endotoxin is tested batch by batch, results remain under 0.5EU/mg. This quality works well for standard cell culture and preclinical animal research.

The product is lyophilized powder, sealed in individual glass vials. B7-33 is for lab research only. It cannot be used in humans.

Our QC team ran stability tests over several months. Unopened vials stored at -20℃ retain stable bioactivity for roughly 12 months. We noticed this trend during our cell trials. After you dissolve the powder, repeated freeze-thaw cycles break down peptide activity, causing inconsistent test results. If you cannot use all the reconstituted solution in one experiment, split it into small aliquots for storage.

 

 

 

 

Many research teams use B7-33 for cell assays and animal fibrosis models. Some groups look into cardiac fibrosis after heart injury, as well as fibrotic changes in lung and kidney tissue. Researchers also use it in vascular biology experiments to evaluate vasodilation and endothelial protection.

Lots of labs use this peptide to explore RXFP1 signaling and extracellular matrix remodeling. Besides organ fibrosis models, it fits preliminary experiments studying tissue repair and inflammation. It acts as a good substitute for native relaxin for projects requiring consistent batch quality and simple sample handling.

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