118-50-3 Usage
General Description
7-[(3-aminobenzoyl)amino]-4-hydroxynaphthalene-2-sulphonic acid is a chemical compound with the molecular formula C16H13N2O5S. It is a sulfonated naphthylamine dye with a bright red color, commonly used as a pH indicator. 7-[(3-aminobenzoyl)amino]-4-hydroxynaphthalene-2-sulphonic acid contains a naphthalene core with a hydroxyl group and a sulfonic acid group, as well as an amino-benzoyl amino group. It is often used in biological and biochemical research as a pH indicator due to its color change from red to yellow at pH 6.8-8.0, and its bright red color at pH 4.2 or lower. Additionally, it has been used in the development of assays for glucose and lactate, and as a reagent for the detection of albumin in urine samples.
Check Digit Verification of cas no
The CAS Registry Mumber 118-50-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,1 and 8 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 118-50:
(5*1)+(4*1)+(3*8)+(2*5)+(1*0)=43
43 % 10 = 3
So 118-50-3 is a valid CAS Registry Number.
InChI:InChI=1/C17H14N2O5S/c18-12-3-1-2-10(6-12)17(21)19-13-4-5-15-11(7-13)8-14(9-16(15)20)25(22,23)24/h1-9,20H,18H2,(H,19,21)(H,22,23,24)
