721917-88-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 721917-88-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,1,9,1 and 7 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 721917-88:
(8*7)+(7*2)+(6*1)+(5*9)+(4*1)+(3*7)+(2*8)+(1*8)=170
170 % 10 = 0
So 721917-88-0 is a valid CAS Registry Number.