251991-33-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 251991-33-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,1,9,9 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 251991-33:
(8*2)+(7*5)+(6*1)+(5*9)+(4*9)+(3*1)+(2*3)+(1*3)=150
150 % 10 = 0
So 251991-33-0 is a valid CAS Registry Number.
251991-33-0Relevant articles and documents
Method for preparing aspartylcyclohexyla laninamide
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, (2008/06/13)
Disclosure is a method for preparing α-aspartyl-β-cyclohexylalaninamide, comprising carrying out a first step of amide formation of an α-aspartyl phenylamine ester of general formula (II) wherein: R is a C1-C4 alkyl radical, and then