921220-07-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 921220-07-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,2,1,2,2 and 0 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 921220-07:
(8*9)+(7*2)+(6*1)+(5*2)+(4*2)+(3*0)+(2*0)+(1*7)=117
117 % 10 = 7
So 921220-07-7 is a valid CAS Registry Number.