83742-51-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83742-51-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,7,4 and 2 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 83742-51:
(7*8)+(6*3)+(5*7)+(4*4)+(3*2)+(2*5)+(1*1)=142
142 % 10 = 2
So 83742-51-2 is a valid CAS Registry Number.