135445-74-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 135445-74-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,4,4 and 5 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 135445-74:
(8*1)+(7*3)+(6*5)+(5*4)+(4*4)+(3*5)+(2*7)+(1*4)=128
128 % 10 = 8
So 135445-74-8 is a valid CAS Registry Number.
135445-74-8Relevant articles and documents
Facile synthesis of 9H-s-triazolo- [3,4-i]purin-5(6H)-ones
Shimada,Suzuki
, p. 3151 - 3154 (2007/10/02)
New tricyclic heterocycles, 9H-s-triazolo[3,4-i]purin-5(6H)-ones(2, 3), were prepared from 6-methylthio-7H-purin-2(3H)-ones (5a, 5d).