Boc-Cys(Npys)-OH

• CAT Number: R039012
• CAS Number: 76880-29-0
• Molecular Formula: C13H17N3O6S2
• Molecular Weight: 375.42
• Purity: ≥95%
• Synonyms: (2R)-2-[(2-methylpropan-2-yl)oxycarbonylamino]-3-[(3-nitropyridin-2-yl)disulfanyl]propanoic acid
• InChI: InChI=1S/C13H17N3O6S2/c1-13(2,3)22-12(19)15-8(11(17)18)7-23-24-10-9(16(20)21)5-4-6-14-10/h4-6,8H,7H2,1-3H3,(H,15,19)(H,17,18)/t8-/m0/s1
• InChIKey: OVTLOLNDKQUMRH-QMMMGPOBSA-N
• SMILES: CC(C)(C)OC(=O)N[C@@H](CSSC1=C(C=CC=N1)[N+](=O)[O-])C(=O)O

Boc-Cys(Npys)-OH（Cat No.:R039012）is a specialized amino acid derivative used in peptide synthesis and bioconjugation applications. It features a Boc (tert-butoxycarbonyl) protective group on the amino group of cysteine, a key amino acid, which prevents unwanted reactions during synthesis. The Npys group, a photoreactive moiety, is incorporated to enable selective attachment or crosslinking under UV light. This compound is commonly used in the synthesis of peptides or proteins where site-specific modifications are needed, particularly in studies involving protein-protein interactions, cell signaling, and drug delivery systems. It is valuable for targeted bioconjugation and protein labeling applications.