64233-23-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 64233-23-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,4,2,3 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 64233-23:
(7*6)+(6*4)+(5*2)+(4*3)+(3*3)+(2*2)+(1*3)=104
104 % 10 = 4
So 64233-23-4 is a valid CAS Registry Number.
64233-23-4Relevant articles and documents
Solvent-free regioselective synthesis of 6- and 7-substituted pteridines under microwave irradiation
Singh,Geetanjali
, p. 136 - 138 (2007/10/03)
Reactions of 5,6-diaminouracils with α-keto aldehydes over acidic and neutral aluminum oxide under microwave irradiation gave the corresponding 6- and 7-substituted 1,2,3,4-tetrahydropteridine-2,4-diones in 63-79% yield with high regioselectivity. Pleiade
