134251-84-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134251-84-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,2,5 and 1 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 134251-84:
(8*1)+(7*3)+(6*4)+(5*2)+(4*5)+(3*1)+(2*8)+(1*4)=106
106 % 10 = 6
So 134251-84-6 is a valid CAS Registry Number.
134251-84-6Relevant articles and documents
Synthesis of 5-nitropyridin-2-ylazo push-pull derivatives
Kreicberga,Jecs,Kampars
, p. 29 - 34 (2008/12/22)
A practical method has been devised for the synthesis of previously unknown push-pull azochromophores with 5-nitropyridin-2-yl acceptor moiety from 2-amino-5-nitro-1-oxypyridine.