87-57-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87-57-0 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 8 and 7 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 87-57:
(4*8)+(3*7)+(2*5)+(1*7)=70
70 % 10 = 0
So 87-57-0 is a valid CAS Registry Number.