1643440-62-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1643440-62-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,4,3,4,4 and 0 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1643440-62:
(9*1)+(8*6)+(7*4)+(6*3)+(5*4)+(4*4)+(3*0)+(2*6)+(1*2)=153
153 % 10 = 3
So 1643440-62-3 is a valid CAS Registry Number.