871681-75-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 871681-75-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,1,6,8 and 1 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 871681-75:
(8*8)+(7*7)+(6*1)+(5*6)+(4*8)+(3*1)+(2*7)+(1*5)=203
203 % 10 = 3
So 871681-75-3 is a valid CAS Registry Number.