681536-52-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 681536-52-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,1,5,3 and 6 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 681536-52:
(8*6)+(7*8)+(6*1)+(5*5)+(4*3)+(3*6)+(2*5)+(1*2)=177
177 % 10 = 7
So 681536-52-7 is a valid CAS Registry Number.