126543-01-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 126543-01-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,6,5,4 and 3 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 126543-01:
(8*1)+(7*2)+(6*6)+(5*5)+(4*4)+(3*3)+(2*0)+(1*1)=109
109 % 10 = 9
So 126543-01-9 is a valid CAS Registry Number.
126543-01-9Relevant articles and documents
The Chemistry of 1,2,4-Triazines, XIV. - Synthesis and Reactions of 5-Chloro-1,2,4-triazines
Neunhoeffer, Hans,Reichel, Diethard,Cullmann, Birgit,Rehn, Ingrid
, p. 631 - 640 (2007/10/02)
5-Chloro-1,2,4-triazines 4 are prepared from 1,2,4-triazin-5(2H)-ones 3 and transfered into 5-amino- (7), 5-cyano (8), and 5-(ω-alkinyloxy)-1,2,4-triazines (9). 7a-d are cyclized to imidazo1,2,4-triazines (10a-d).
