87-93-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87-93-4 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, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 87-93:
(4*8)+(3*7)+(2*9)+(1*3)=74
74 % 10 = 4
So 87-93-4 is a valid CAS Registry Number.