5639-03-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5639-03-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,6,3 and 9 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 5639-03:
(6*5)+(5*6)+(4*3)+(3*9)+(2*0)+(1*3)=102
102 % 10 = 2
So 5639-03-2 is a valid CAS Registry Number.