873983-42-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 873983-42-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,3,9,8 and 3 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 873983-42:
(8*8)+(7*7)+(6*3)+(5*9)+(4*8)+(3*3)+(2*4)+(1*2)=227
227 % 10 = 7
So 873983-42-7 is a valid CAS Registry Number.