90556-55-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90556-55-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,5,5 and 6 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 90556-55:
(7*9)+(6*0)+(5*5)+(4*5)+(3*6)+(2*5)+(1*5)=141
141 % 10 = 1
So 90556-55-1 is a valid CAS Registry Number.