665013-42-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 665013-42-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,5,0,1 and 3 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 665013-42:
(8*6)+(7*6)+(6*5)+(5*0)+(4*1)+(3*3)+(2*4)+(1*2)=143
143 % 10 = 3
So 665013-42-3 is a valid CAS Registry Number.