83999-42-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83999-42-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,9,9 and 9 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 83999-42:
(7*8)+(6*3)+(5*9)+(4*9)+(3*9)+(2*4)+(1*2)=192
192 % 10 = 2
So 83999-42-2 is a valid CAS Registry Number.