Ac-IETD-pNA

Ac-IETD-pNA is a substrate for caspase-8. Caspase-8 preferentially binds to and cleaves the Ile-Glu-Thr-Asp (IETD) peptide sequence to release p-nitroalinide, which can be quantified by colorimetric detection at 405 nm as a measure of enzyme activity.Formal Name: N-acetyl-L-isoleucyl-L-alpha-glutamyl-L-threonyl-N-(4-nitrophenyl)-L-alpha-asparagine. CAS Number: 219138-21-3. Synonyms: Ac-Ile-Glu-Thr-Asp-pNA, Caspase-8 Chromogenic Substrate I. Molecular Formula: C27H38N6O12. Formula Weight: 638.6. Purity: >95%. Formulation: (Request formulation change), A lyophilized powder. Solubility: Formic Acid: 1 mg/ml. SMILES: O=C([C@@H](NC([C@H]([C@H](CC)C)NC(C)=O)=O)CCC(O)=O)N[C@H](C(N[C@H](C(NC1=CC=C(C=C1)[N+]([O-])=O)=O)CC(O)=O)=O)[C@@H](C)O. InChi Code: InChI=1S/C27H38N6O12/c1-5-13(2)22(28-15(4)35)26(42)30-18(10-11-20(36)37)24(40)32-23(14(3)34)27(43)31-19(12-21(38)39)25(41)29-16-6-8-17(9-7-16)33(44)45/h6-9,13-14,18-19,22-23,34H,5,10-12H2,1-4H3,(H,28,35)(H,29,41)(H,30,42)(H,31,43)(H,32,40)(H,36,37)(H,38,39)/t13-,14+,18-,19-,22-,23-/m0/s1. InChi Key: FHURKTIGZAIQGR-BQCLNCLCSA-N.