1213973-45-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1213973-45-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,3,9,7 and 3 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1213973-45:
(9*1)+(8*2)+(7*1)+(6*3)+(5*9)+(4*7)+(3*3)+(2*4)+(1*5)=145
145 % 10 = 5
So 1213973-45-5 is a valid CAS Registry Number.