2066-93-5

Basic information

• Product Name: 3,4-dihydro-3,4-dioxonaphthalene-1-sulphonic acid
• Synonyms: 3,4-dihydro-3,4-dioxonaphthalene-1-sulphonic acid;1,2-naphthoquinone-4-sulfonate;BETA-NAPHTHOQUINONE-4-SULPHONATE;3,4-dioxo-3,4-dihydronaphthalene-1-sulfonic acid
• CAS NO: 2066-93-5
• Molecular Formula: C₁₀H₆O₅S
• Molecular Weight: 238.21664
• EINECS: 218-184-8
• Mol File: 2066-93-5.mol
• Article Data: 3

Chemical Properties

• Appearance: /
• Density: 1.68 g/cm³
• PKA: -4.27±0.20(Predicted)
• CAS DataBase Reference: 3,4-dihydro-3,4-dioxonaphthalene-1-sulphonic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 3,4-dihydro-3,4-dioxonaphthalene-1-sulphonic acid(2066-93-5)
• EPA Substance Registry System: 3,4-dihydro-3,4-dioxonaphthalene-1-sulphonic acid(2066-93-5)

Safety Data

• Hazardous Substances Data: 2066-93-5(Hazardous Substances Data)

Usage

InChI:InChI=1/C10H6O5S/c11-8-5-9(16(13,14)15)6-3-1-2-4-7(6)10(8)12/h1-5H,(H,13,14,15)

Upstream product

• 16223-99-7 3,4-dihydroxy-naphthalene-1-sulfonic acid 
• 567-13-5 2-amino-1-naphthol-4-sulfonic acid 
• 116-63-2 1-amino-2-naphthol-4-sulfonic acid 
• 7782-77-6 cis-nitrous acid 
• 7697-37-2 nitric acid 
• 573-58-0 congo red 
• 131-91-9 1-Nitroso-2-naphthol 
• 84-87-7 1-hydroxy-4-naphthalenesulfonate 
• 23792-56-5 2-benzeneazo-1-naphthol-4-sulfonic acid 

Downstream Products

• 83-72-7 2-hydroxynaphtho-1,4-quinone 
• 93718-38-8 4-[bis-(2-chloro-ethyl)-amino]-[1,2]naphthoquinone 
• 79971-37-2 4-(cyanomethyl)-1,2-naphthoquinone 
• 18093-47-5 (3,4-dioxo-3,4-dihydro-[1]naphthyl)-malonic acid diethyl ester 
• 439-55-4 4-(1-aziridinyl)-1,2-naphthoquinone 
• 75140-07-7 4-(4-hydroxy-anilino)-[1,2]naphthoquinone 
• 7473-18-9 2-ethoxy-1,4-naphthoquinone 
• 57182-49-7 2-(p-toluidino)-1,4-naphthoquinone 

Relevant articles and documents

Synthesis of Substituted 4-Arylamino-1,2-naphthoquinones in One-Pot Reactions Using CotA-Laccase as Biocatalyst

An efficient and environmentally benign biocatalytic strategy for the synthesis of substituted 4-arylamino-1,2-naphthoquinones was developed, through a cross-coupling reaction in which the 1,2-naphthoquinone nucleus, formed in the biocatalytic process mediated by CotA-laccase from Bacillus subtilis, is the key synthetic intermediate. Electrochemical data and kinetic parameters were determined revealing a significant higher specificity of CotA-laccase for 4-amino-3-hydroxynaphthalene-1-sulfonic acid (AHNSA). This ability of CotA-laccase to discriminate between oxidisable aromatic amines allows the set-up of one-pot reactions in the presence of the enzyme, between AHNSA and a set of appropriate aromatic amines under mild reaction conditions. (Figure presented.).

Process for dyeing keratinous fibres with a hydroxyindole in combination with a quinone derivative; and novel 1,4-benzoquinones

Process for dyeing keratinous fibres, comprising the step of applying to these fibres at least one composition A containing, in a medium appropriate for dyeing, at least one mono- or di-hydroxyindole the application of the composition A being preceded or followed by the application of a composition B containing, in a medium appropriate for dyeing, at least one quinone derivative chosen from ortho- or para-benzoquinones, monoimines or diimines of ortho- or para-benzoquinones, 1,2- or 1,4-naphthoquinones, sulphonimides of ortho- or para-benzoquinones, α, ω-alkylene-bis-1,4-benzoquinones, or 1,2- or 1,4-naphthoquinone-monoimines or -diimines; the mono- or di-hydroxyindoles and the quinone derivatives being chosen such that the oxidation-reduction potential difference ΔE between the oxidation-reduction potential Ei of the mono- or di-hydroxyindoles, determined at pH 7 in a phosphate medium on a vitreous carbon electrode by voltametry, and the oxidation-reduction potential Eq of the quinone derivative determined at pH 7 in a phosphate medium by polarography on a mercury electrode and relative to a saturated calomel electrode is such that