1398718-34-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1398718-34-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,9,8,7,1 and 8 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1398718-34:
(9*1)+(8*3)+(7*9)+(6*8)+(5*7)+(4*1)+(3*8)+(2*3)+(1*4)=217
217 % 10 = 7
So 1398718-34-7 is a valid CAS Registry Number.