82781-91-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 82781-91-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,7,8 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 82781-91:
(7*8)+(6*2)+(5*7)+(4*8)+(3*1)+(2*9)+(1*1)=157
157 % 10 = 7
So 82781-91-7 is a valid CAS Registry Number.