91856-13-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91856-13-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,8,5 and 6 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 91856-13:
(7*9)+(6*1)+(5*8)+(4*5)+(3*6)+(2*1)+(1*3)=152
152 % 10 = 2
So 91856-13-2 is a valid CAS Registry Number.
91856-13-2Relevant articles and documents
Cyclization of the reaction products of p-phenylenediamine with maleic acid
Rutkauskas,Beresnevicius
, p. 792 - 796 (2004)
Treatment of p-phenylenediamine with maleic acid and its diethyl ester gave di- and tetracarboxylic amino acids and their esters. A benzene derivative having an α-alanine and an aspartic acid residue has been prepared. The cyclization of aminocarboxylic a