83716-74-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83716-74-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,7,1 and 6 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 83716-74:
(7*8)+(6*3)+(5*7)+(4*1)+(3*6)+(2*7)+(1*4)=149
149 % 10 = 9
So 83716-74-9 is a valid CAS Registry Number.