198135-04-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 198135-04-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,8,1,3 and 5 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 198135-04:
(8*1)+(7*9)+(6*8)+(5*1)+(4*3)+(3*5)+(2*0)+(1*4)=155
155 % 10 = 5
So 198135-04-5 is a valid CAS Registry Number.
198135-04-5Relevant articles and documents
Synthesis of tetra-substituted pyrazoles
Rüger, Anne J.,Nieger, Martin,Br?se, Stefan
, p. 8823 - 8829 (2012/11/06)
A set of highly substituted pyrazoles bearing different functional groups on the pyrazole core was developed. Employing a suitable protecting group strategy we could regioselectively introduce various substituents in position 1, 3 and 4 of the pyrazole. T