143263-49-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 143263-49-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,2,6 and 3 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 143263-49:
(8*1)+(7*4)+(6*3)+(5*2)+(4*6)+(3*3)+(2*4)+(1*9)=114
114 % 10 = 4
So 143263-49-4 is a valid CAS Registry Number.
143263-49-4Relevant articles and documents
SYNTHESIS OF 3,4-DIHYDROPYRIDAZINOBENZIMIDAZOLES
Khodja, Mohamed,Sicker, Dieter,Wilde, Horst
, p. 401 - 412 (2007/10/02)
3,4-Dihydropyridazinobenzimidazoles (4a-e) have been prepared by catalytical hydrogenation of dialkyl (E)-2-(substituted 2-nitrophenylhydrazono)glutarates (1a-e) to the respective amines (2) followed by their base catalyzed cyclization in a tandem