2-Nitro-5-thiothiocyanatobenzoic acid

• CAT Number: R065739
• CAS Number: 30211-77-9
• Molecular Formula: C8H4N2O4S
• Molecular Weight: 224.19
• Purity: ≥95%
• Synonyms: NTCB
• Storage: -20°C
• IUPAC Name: 2-nitro-5-thiocyanatobenzoic acid
• InChI: InChI=1S/C8H4N2O4S/c9-4-15-5-1-2-7(10(13)14)6(3-5)8(11)12/h1-3H,(H,11,12)
• InChIKey: NQUNIMFHIWQQGJ-UHFFFAOYSA-N
• SMILES: C1=CC(=C(C=C1SC#N)C(=O)O)[N+](=O)[O-]

2-Nitro-5-thiocyanatobenzoic acid is used to cyanylate proteins and to specifically cleave the amino-terminal peptide bond of cysteine residues.

Reference

1.Tang, H.Y. and Speicher, D.W. Identification of alternative products and optimization of 2-nitro-5-thiocyanatobenzoic acid cyanylation and cleavage at cysteine residues. Analytical Biochemistry 334, 48-61 (2004).