3554-09-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3554-09-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,5,5 and 4 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 3554-09:
(6*3)+(5*5)+(4*5)+(3*4)+(2*0)+(1*9)=84
84 % 10 = 4
So 3554-09-4 is a valid CAS Registry Number.