152569-02-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 152569-02-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,2,5,6 and 9 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 152569-02:
(8*1)+(7*5)+(6*2)+(5*5)+(4*6)+(3*9)+(2*0)+(1*2)=133
133 % 10 = 3
So 152569-02-3 is a valid CAS Registry Number.
152569-02-3Relevant articles and documents
Studies on Pyrazines. 26. Synthesis of 2,4-Diamino-6-methylpteridine 5-Oxide and the Inertness of the 6-Methyl-group Functionalization
Sato, Nobuhiro,Suzuki, Hiroko
, p. 841 - 844 (2007/10/02)
Synthesis of 2,4-diamino-6-methylpteridine 5-oxide was achieved in a five-step sequence of reaction starting from 5-methylpyrazinecarboxamide.Several attempts to introduce functionality into the 6-methyl group are described.
