312719-40-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 312719-40-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,2,7,1 and 9 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 312719-40:
(8*3)+(7*1)+(6*2)+(5*7)+(4*1)+(3*9)+(2*4)+(1*0)=117
117 % 10 = 7
So 312719-40-7 is a valid CAS Registry Number.