643000-00-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 643000-00-4 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 0 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 643000-00:
(8*6)+(7*4)+(6*3)+(5*0)+(4*0)+(3*0)+(2*0)+(1*0)=94
94 % 10 = 4
So 643000-00-4 is a valid CAS Registry Number.