34203-17-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 34203-17-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,2,0 and 3 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 34203-17:
(7*3)+(6*4)+(5*2)+(4*0)+(3*3)+(2*1)+(1*7)=73
73 % 10 = 3
So 34203-17-3 is a valid CAS Registry Number.