55621-99-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55621-99-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,6,2 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 55621-99:
(7*5)+(6*5)+(5*6)+(4*2)+(3*1)+(2*9)+(1*9)=133
133 % 10 = 3
So 55621-99-3 is a valid CAS Registry Number.