7515-56-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7515-56-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,5,1 and 5 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 7515-56:
(6*7)+(5*5)+(4*1)+(3*5)+(2*5)+(1*6)=102
102 % 10 = 2
So 7515-56-2 is a valid CAS Registry Number.