74307-83-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74307-83-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,3,0 and 7 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 74307-83:
(7*7)+(6*4)+(5*3)+(4*0)+(3*7)+(2*8)+(1*3)=128
128 % 10 = 8
So 74307-83-8 is a valid CAS Registry Number.