Liu, Huanhuan published the artcileRelationship of mineralization of amino naphthalene sulfonic acids by Fenton oxidation and frontier molecular orbital energies, Recommanded Product: 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, the publication is Chemical Engineering Journal (Amsterdam, Netherlands) (2014), 275-282, database is CAplus.
Six amino naphthalene sulfonic acids including mono-, di- and tri-sulfonic acid compounds were studied to find the relationship between the reactivity of this kind of compounds in Fenton oxidation process and energies of the frontier MO. It was found that the initial rates of TOC reduction and oxalic acid production correlated strongly to the frontier MO energies and can be estimated by EHOMO and the absolute electronegativity (χ). The cleavage of -SO3H and -NH2 groups to produce SO2-4 and NH+4 species was dependent on the electron d. distribution on the -SO3H moiety and the α-carbon atom connecting the -NH2 moiety. The electron withdrawing effect of the -SO3H groups influenced the mineralization of naphthalene sulfonic acids significantly. The naphthalene sulfonic acid with more -SO3H groups was more recalcitrant to the Fenton oxidation
Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about 116-63-2. 116-63-2 belongs to naphthyridine, auxiliary class Sulfonic acid,Amine,Naphthalene,Alcohol,Organic Pigment, name is 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, and the molecular formula is C10H9NO4S, Recommanded Product: 4-Amino-3-hydroxynaphthalene-1-sulfonic acid.
Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem