74531-21-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74531-21-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,5,3 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 74531-21:
(7*7)+(6*4)+(5*5)+(4*3)+(3*1)+(2*2)+(1*1)=118
118 % 10 = 8
So 74531-21-8 is a valid CAS Registry Number.
74531-21-8Relevant articles and documents
Synthesis of Some Itaconates via Wittig Reaction
Awad, William I.,Kandile, Nadia G.,Wassef, Wasfy N.,Mohamed, Mansoura I.
, p. 405 - 410 (2007/10/02)
The Wittig reaction of aromatic aldehydes with 1,2-bis-(ethoxycarbonyl) ethylidene triphenyl phosphorane (1) furnished oily mixtures of the two diastereomeric products (E) and (Z) (2).Alkaline hydrolysis of the diesters followed by fractional crystallizat
