Melanotan-I (MT-1) is a linear 13-amino-acid analog of alpha-melanocyte-stimulating hormone engineered for prolonged melanocortin-1 receptor activation, making it a research tool in pigmentation and photobiology studies. Its resistance to enzymatic degradation supports long-duration exposure experiments. This product is a white lyophilized powder at >=99% HPLC purity in a sealed vial. We provide batch documentation, flexible pack formats and worldwide shipping for laboratory and distributor buyers. Every lot ships with a signed certificate of analysis verifying purity, and neutral unmarked packaging is available on request. We accommodate academic, institutional and commercial buyers with flexible quantities, competitive pricing and dependable cold-chain logistics that reach most countries within days. Stock is refreshed regularly, and re-orders are processed through streamlined production scheduling.