55887-21-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55887-21-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,8,8 and 7 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 55887-21:
(7*5)+(6*5)+(5*8)+(4*8)+(3*7)+(2*2)+(1*1)=163
163 % 10 = 3
So 55887-21-3 is a valid CAS Registry Number.