15642-88-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 15642-88-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,6,4 and 2 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 15642-88:
(7*1)+(6*5)+(5*6)+(4*4)+(3*2)+(2*8)+(1*8)=113
113 % 10 = 3
So 15642-88-3 is a valid CAS Registry Number.