97821-63-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97821-63-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,8,2 and 1 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 97821-63:
(7*9)+(6*7)+(5*8)+(4*2)+(3*1)+(2*6)+(1*3)=171
171 % 10 = 1
So 97821-63-1 is a valid CAS Registry Number.