71812-52-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71812-52-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,8,1 and 2 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 71812-52:
(7*7)+(6*1)+(5*8)+(4*1)+(3*2)+(2*5)+(1*2)=117
117 % 10 = 7
So 71812-52-7 is a valid CAS Registry Number.