39668-54-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 39668-54-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,6,6 and 8 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 39668-54:
(7*3)+(6*9)+(5*6)+(4*6)+(3*8)+(2*5)+(1*4)=167
167 % 10 = 7
So 39668-54-7 is a valid CAS Registry Number.