644955-58-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 644955-58-8 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, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 644955-58:
(8*6)+(7*4)+(6*4)+(5*9)+(4*5)+(3*5)+(2*5)+(1*8)=198
198 % 10 = 8
So 644955-58-8 is a valid CAS Registry Number.