1643448-01-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1643448-01-4 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 8 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1643448-01:
(9*1)+(8*6)+(7*4)+(6*3)+(5*4)+(4*4)+(3*8)+(2*0)+(1*1)=164
164 % 10 = 4
So 1643448-01-4 is a valid CAS Registry Number.