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Carbamic acid, [4-(1-hydroxy-3-butynyl)phenyl]-, 1,1-dimethylethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

143774-34-9

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143774-34-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143774-34-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,7,7 and 4 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 143774-34:
(8*1)+(7*4)+(6*3)+(5*7)+(4*7)+(3*4)+(2*3)+(1*4)=139
139 % 10 = 9
So 143774-34-9 is a valid CAS Registry Number.

143774-34-9Relevant academic research and scientific papers

Guanidinophenyl-Substituted Enol Lactones as Selective, Mechanism-Based Inhibitors of Trypsin-like Serine Proteases

Rai, Roopa,Katzenellenbogen, John A.

, p. 4150 - 4159 (2007/10/02)

We have synthesized four guanidinophenyl-substituted protio enol and iodo enol lactones (3-(4-guanidinophenyl)-6-methylidenetetrahydro-2-pyranone (1), 3-(4-guanidinophenyl)-6-(E)-(iodomethylidene)tetrahydro-2-pyranone (2), 4-(4-guanidinophenyl)-6-methylidenetetrahydro-2-pyranone (3), and 4-(4-guanidinophenyl)-6-(E)-(iodomethylidene)tetrahydro-2-pyranone (4)) and tested them for inhibitory activity against some trypsin-like enzymes, namely trypsin, urokinase, tissue plasminogen activator (t-PA), plasmin, and thrombin, as well as α-chymotrypsin and human neutrophil elastase (HNE).The β-aryl-substituted protio lactone 3 was a potent alternate substrate inhibitor of trypsin and urokinase.The α-aryl-substituted iodo lactone 2 was a permanent inactivator of urokinase, plasmin, t-PA, thrombin, and α-chymotrypsin, exhibiting a relatively high specificity for the former two enzymes.In general, these compounds showed a preference for inactivating trypsin-like enzymes over α-chymotrypsin and HNE.Also, within the class of trypsin-like enzymes, there was generally good selectivity of inhibition.

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