99972-98-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99972-98-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,9,7 and 2 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 99972-98:
(7*9)+(6*9)+(5*9)+(4*7)+(3*2)+(2*9)+(1*8)=222
222 % 10 = 2
So 99972-98-2 is a valid CAS Registry Number.