Chymostatin

Chymostatin is a bioactive peptide of microbial origin that acts as a protease inhibitor with selectivity for chymotryptase-like serine proteases. It potently inhibits chymotrypsin and chymase (Ki = 9.36 and 13.1 nM, respectively) while less effectively blocking the activity of cathepsins, papain, and leukocyte elastase. It is without effect on trypsin, thrombin, plasmin, pepsin, and kallikrein.CAS Number: 9076-44-2. Molecular Formula: C31H41O6N7. Formula Weight: 607.7. Purity: >95% (a mixture of A, B, C). Formulation: (Request formulation change), A crystalline solid. Solubility: DMSO: 10 mg/ml, DMSO:PBS (pH 7.2) (1:1): 0.5 mg/ml. SMILES: N=C1NCC[C@@H]([C@H](NC(N[C@@H](CC2=CC=CC=C2)C(O)=O)=O)C(N[C@@H](CC(C)C)C(N[C@@H](CC3=CC=CC=C3)C([H])=O)=O)=O)N1.N=C4NCC[C@@H]([C@H](NC(N[C@@H](CC5=CC=CC=C5)C(O)=O)=O)C(N[C@@H](C(CC)C)C(N[C@@H](CC6=CC=CC=C6)C([H])=O)=O)=O)N4.N=C7NCC[C@@H]([C@H](NC(N[C@@H](CC8=CC=CC=C8)C(O)=O)=O)C(N[C@@H](C(C)C)C(N[C@@H](CC9=CC=CC=C9)C([H])=O)=O)=O)N7. InChi Code: InChI=1S/2C31H41N7O6.C30H39N7O6/c1-19(2)15-24(27(40)34-22(18-39)16-20-9-5-3-6-10-20)35-28(41)26(23-13-14-33-30(32)36-23)38-31(44)37-25(29(42)43)17-21-11-7-4-8-12-21,1-3-19(2)25(27(40)34-22(18-39)16-20-10-6-4-7-11-20)37-28(41)26(23-14-15-33-30(32)35-23)38-31(44)36-24(29(42)43)17-21-12-8-5-9-13-21,1-18(2)24(26(39)33-21(17-38)15-19-9-5-3-6-10-19)36-27(40)25(22-13-14-32-29(31)34-22)37-30(43)35-23(28(41)42)16-20-11-7-4-8-12-20/h3-12,18-19,22-26H,13-17H2,1-2H3,(H,34,40)(H,35,41)(H,42,43)(H3,32,33,36)(H2,37,38,44),4-13,18-19,22-26H,3,14-17H2,1-2H3,(H,34,40)(H,37,41)(H,42,43)(H3,32,33,35)(H2,36,38,44),3-12,17-18,21-25H,13-16H2,1-2H3,(H,33,39)(H,36,40)(H,41,42)(H3,31,32,34)(H2,35,37,43)/t22-,23-,24?,25-,26-,19?,22-,23-,24-,25?,26-,21-,22-,23-,24?,25-/m000/s1. InChi Key: QJIJPLFVFWXMGK-XUICXHRPSA-N.