91736-90-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91736-90-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,7,3 and 6 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 91736-90:
(7*9)+(6*1)+(5*7)+(4*3)+(3*6)+(2*9)+(1*0)=152
152 % 10 = 2
So 91736-90-2 is a valid CAS Registry Number.
91736-90-2Relevant articles and documents
Conversion of Dipyridazinothiazines into Dipyridazinopyrroles through a Base-Induced Extrusion of Sulfur
Kaji, Kenji,Nagashima, Hiromu,Oda, Hirohisa
, p. 1423 - 1432 (2007/10/02)
A novel ring contraction for the conversion of 2,7-disubstituted 10H-dipyridazinothiazine-1,6-(2H,7H)-diones (4'a-c) into the corresponding 2,6-disubstituted 9H-dipyridazinopyrrole-1,5(2H,6H)-diones (7'a-c), through a ba