102516-42-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 102516-42-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,2,5,1 and 6 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 102516-42:
(8*1)+(7*0)+(6*2)+(5*5)+(4*1)+(3*6)+(2*4)+(1*2)=77
77 % 10 = 7
So 102516-42-7 is a valid CAS Registry Number.