640735-03-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 640735-03-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,0,7,3 and 5 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 640735-03:
(8*6)+(7*4)+(6*0)+(5*7)+(4*3)+(3*5)+(2*0)+(1*3)=141
141 % 10 = 1
So 640735-03-1 is a valid CAS Registry Number.