640263-69-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 640263-69-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,0,2,6 and 3 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 640263-69:
(8*6)+(7*4)+(6*0)+(5*2)+(4*6)+(3*3)+(2*6)+(1*9)=140
140 % 10 = 0
So 640263-69-0 is a valid CAS Registry Number.