3647-40-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3647-40-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,6,4 and 7 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 3647-40:
(6*3)+(5*6)+(4*4)+(3*7)+(2*4)+(1*0)=93
93 % 10 = 3
So 3647-40-3 is a valid CAS Registry Number.