423731-96-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 423731-96-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,3,7,3 and 1 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 423731-96:
(8*4)+(7*2)+(6*3)+(5*7)+(4*3)+(3*1)+(2*9)+(1*6)=138
138 % 10 = 8
So 423731-96-8 is a valid CAS Registry Number.
423731-96-8Relevant articles and documents
Acylation of amino acids with furancarboxylic acid chlorides
Lapina,Pevzner
, p. 1479 - 1483 (2007/10/03)
Acylation of aromatic amino acids with furancarboxylic acid chlorides effectively proceeds in water-acetone medium at pH 8-9. Aliphatic amino acids are acylated at higher pH values, but under these conditions hydrolysis of acid chlorides becomes the main