39724-40-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 39724-40-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,7,2 and 4 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 39724-40:
(7*3)+(6*9)+(5*7)+(4*2)+(3*4)+(2*4)+(1*0)=138
138 % 10 = 8
So 39724-40-8 is a valid CAS Registry Number.