817632-91-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 817632-91-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,1,7,6,3 and 2 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 817632-91:
(8*8)+(7*1)+(6*7)+(5*6)+(4*3)+(3*2)+(2*9)+(1*1)=180
180 % 10 = 0
So 817632-91-0 is a valid CAS Registry Number.