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174537-28-1

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174537-28-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 174537-28-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,4,5,3 and 7 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 174537-28:
(8*1)+(7*7)+(6*4)+(5*5)+(4*3)+(3*7)+(2*2)+(1*8)=151
151 % 10 = 1
So 174537-28-1 is a valid CAS Registry Number.

174537-28-1Downstream Products

174537-28-1Relevant articles and documents

Peptidyl and azapeptidyl methylketones as substrate analog inhibitors of papin and cathepsin B

Calabretta, R.,Giordano, C.,Gallina, C.,Morea, V.,Consalvi, V.,Scandurra, R.

, p. 931 - 942 (2007/10/03)

Peptidyl methylketones containing Phe, Tyr, Tyr(I), Tyr(I2), Leu and Ile in P2 were synthesized and tested as substrate analog revesible of papain and bovine spleen cathepsin B.The most effective cathepsin B inhibitor contained Tyr(I2) and displayed an inhibition constant of 4.7 μM at pH 6.8 and 25 deg C, while Leu or Ile gave practically inert analogs.Replacement of the amino acids in P2 with the analogues α-azaamino acids, as well as the glycine in P1 with α-azaglycine, led to complete loss of inhibiting activity.Introducing alkoxy substituents at themethyl adjacent to the ketone group generally resulted in more effective inhibitors, with inhibition constants in the micromolar range for both papin and cathepsin B. - Keywords: enzyme inhibiting activity; cysteine proptease; slow binding; peptidyl methylketone; azapeptidyl methylketone; papain; cathepsin B

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