3-nitro-benzenesulfonic acid-(2-nitro-anilide) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 873985-57-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,3,9,8 and 5 respectively; the second part has 2 digits, 5 and 7 respectively. Calculate Digit Verification of CAS Registry Number 873985-57: (8*8)+(7*7)+(6*3)+(5*9)+(4*8)+(3*5)+(2*5)+(1*7)=240 240 % 10 = 0 So 873985-57-0 is a valid CAS Registry Number.