7554-99-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7554-99-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,5,5 and 4 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 7554-99:
(6*7)+(5*5)+(4*5)+(3*4)+(2*9)+(1*9)=126
126 % 10 = 6
So 7554-99-6 is a valid CAS Registry Number.