643005-09-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 643005-09-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,3,0,0 and 5 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 643005-09:
(8*6)+(7*4)+(6*3)+(5*0)+(4*0)+(3*5)+(2*0)+(1*9)=118
118 % 10 = 8
So 643005-09-8 is a valid CAS Registry Number.