312939-74-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 312939-74-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,2,9,3 and 9 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 312939-74:
(8*3)+(7*1)+(6*2)+(5*9)+(4*3)+(3*9)+(2*7)+(1*4)=145
145 % 10 = 5
So 312939-74-5 is a valid CAS Registry Number.