344438-17-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 344438-17-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,4,4,3 and 8 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 344438-17:
(8*3)+(7*4)+(6*4)+(5*4)+(4*3)+(3*8)+(2*1)+(1*7)=141
141 % 10 = 1
So 344438-17-1 is a valid CAS Registry Number.