644955-44-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 644955-44-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,4,9,5 and 5 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 644955-44:
(8*6)+(7*4)+(6*4)+(5*9)+(4*5)+(3*5)+(2*4)+(1*4)=192
192 % 10 = 2
So 644955-44-2 is a valid CAS Registry Number.