312940-19-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 312940-19-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,2,9,4 and 0 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 312940-19:
(8*3)+(7*1)+(6*2)+(5*9)+(4*4)+(3*0)+(2*1)+(1*9)=115
115 % 10 = 5
So 312940-19-5 is a valid CAS Registry Number.