1234434-11-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1234434-11-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,4,4,3 and 4 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1234434-11:
(9*1)+(8*2)+(7*3)+(6*4)+(5*4)+(4*3)+(3*4)+(2*1)+(1*1)=117
117 % 10 = 7
So 1234434-11-7 is a valid CAS Registry Number.