87921-59-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87921-59-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,9,2 and 1 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 87921-59:
(7*8)+(6*7)+(5*9)+(4*2)+(3*1)+(2*5)+(1*9)=173
173 % 10 = 3
So 87921-59-3 is a valid CAS Registry Number.