4-Hydroxynaphthalene-2,7-disulfonic acid CAS 578-85-8
| CAS No. | 578-85-8 |
| Molecular Formula | C10H8O7S2 |
| Molecular Weight | 304.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Hydroxynaphthalene-2,7-disulfonic acid.
4-Hydroxynaphthalene-2,7-disulfonic acid (CAS 578-85-8), molecular formula C10H8O7S2 and molecular weight 304.30 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C10H8O7S2, 4-Hydroxynaphthalene-2,7-disulfonic acid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 304.30 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4-Hydroxynaphthalene-2,7-disulfonic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C10H8O7S2 |
| Molecular Weight | 304.30 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 2 |
Related Hydroxynaphthalene Standards
- 8-Hydroxynaphthalene-1,6-disulfonic acid (CAS 117-43-1)
- 1-(1-Hydroxynaphthalene-2-carbonyl)pyrrolidine-2-carboxylic acid (CAS 1103247-90-0)
- 887-76-3 4,4'-Azo-3-hydroxynaphthalene-1-sulphonate 1-Naphthalenediazonium, 2-hydroxy-4-sulfo-, hydroxide, inner salt 1-Naphthalenediazonium, 2-hydroxy-4-sulfo-, inner salt EINECS 212-958-9 EC 212-958-9 (CAS 887-76-3)
- Sodium 5-hydroxynaphthalene-1-sulfonate (CAS 5419-77-2)
- 1-Hydroxynaphthalene-2-sulfonyl chloride (CAS 102879-07-2)
- 3-Hydroxynaphthalene-2,7-dicarboxylic acid (CAS 160592-73-4)
- 8-Hydroxynaphthalene-1-sulfonic acid (CAS 117-22-6)
- 7-Hydroxynaphthalene-1-sulfonic acid (CAS 132-57-0)
Recommended Standards
- 4-Hydroxy-6-(4-methoxyphenyl)-2-(2-pyridinyl)-5-pyrimidinecarbonitrile (CAS 320418-61-9)
- 5-(1,3-Diphenyl-1H-pyrazol-4-yl)-1,3,4-oxadiazol-2(3H)-one (CAS 917947-68-3)
- 4-(4-Formylpyrimidin-2-yl)phenyl benzoate (CAS 477870-75-0)
- 5-(5-(Ethoxycarbonyl)-3-methyl-1H-pyrazol-1-yl)-2-methoxybenzoic acid (CAS 637318-31-1)
- 6-Bromo-4,8-dichlorobenzofuro[3,2-d]pyrimidine (CAS 2251053-04-8)
- 3-Benzyl-2,4-dioxo-1,2,3,4-tetrahydroquinazoline-7-carboxylic acid (CAS 687580-04-7)
- 3-(Hydroxymethyl)-1H-pyrazole-5-carboxamide (CAS 72127-48-1)
- n-Cyclopropylprop-2-ene-1-sulfonamide (CAS 1544781-59-0)
- 1-((4-Chlorophenyl)sulfonyl)-4-tosylpiperazine (CAS 459795-96-1)
- (2E)-3-(4-Chlorophenyl)-3-oxo-2-(2-phenylhydrazin-1-ylidene)propanal (CAS 337512-10-4)
- Rocuronium Impurity 32 (CAS CATO-C4X-124232)
- 3-Nitro-2-(phenylsulfonyl)pyridine (CAS 188429-02-9)
- 2-(5-(3-(6-((2,5-Dioxopyrrolidin-1-yl)oxy)-6-oxohexyl)-1,1-dimethyl-6,8-disulfo-1,3-dihydro-2H-benzo[e]indol-2-ylidene)penta-1,3-dien-1-yl)-3-ethyl-1,1-dimethyl-8-sulfo-1H-benzo[e]indol-3-ium-6-sulfonate (CAS 442912-55-2)
- Endo-[Glu]31-Liraglutide (CAS CATO-C4X-199234)
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