243472-81-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 243472-81-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,3,4,7 and 2 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 243472-81:
(8*2)+(7*4)+(6*3)+(5*4)+(4*7)+(3*2)+(2*8)+(1*1)=133
133 % 10 = 3
So 243472-81-3 is a valid CAS Registry Number.
243472-81-3Relevant articles and documents
Studies on pyrazines. 35 [1]. An improved synthesis of bromopyrazines from hydroxypyrazines
Sato, Nobuhiro,Narita, Nobuhiko
, p. 783 - 786 (2007/10/03)
The synthesis of bromopyrazines from hydroxypyrazines was successfully effected by the procedure via trimethylsilyloxypyrazines, the sequence of which proceeds under mild conditions and does not require the isolation of intermediate.