3-nitro-benzenesulfonic acid-[1]naphthylamide is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 419559-79-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,1,9,5,5 and 9 respectively; the second part has 2 digits, 7 and 9 respectively. Calculate Digit Verification of CAS Registry Number 419559-79: (8*4)+(7*1)+(6*9)+(5*5)+(4*5)+(3*9)+(2*7)+(1*9)=188 188 % 10 = 8 So 419559-79-8 is a valid CAS Registry Number.