4-Amino-3-hydroxynaphthalene-2,7-disulfonic acid CAS 2007-20-7
| CAS No. | 2007-20-7 |
| Molecular Formula | C10H9NO7S2 |
| Molecular Weight | 319.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 4-Amino-3-hydroxynaphthalene-2,7-disulfonic acid (C10H9NO7S2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies 4-Amino-3-hydroxynaphthalene-2,7-disulfonic acid (CAS 2007-20-7), a certified reference material (molecular formula C10H9NO7S2, MW 319.31 g/mol) for analytical method development and quality control.
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-Amino-3-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 | C10H9NO7S2 |
| Molecular Weight | 319.31 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 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Amino Standards
- 4-Amino-5-hydroxynaphthalene-1,7-disulfonic acid (CAS 130-23-4)
- 1-Amino-8-naphthol-2,4-disulfonic acid (CAS 82-47-3)
- 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid (CAS 6535-70-2)
- 3-Amino-5-hydroxynaphthalene-2,7-disulfonic acid (CAS 90-40-4)
- Methyl 4-amino-1-(2-methoxy-4-(methoxycarbonyl)benzyl)-1H-pyrazole-5-carboxylate (CAS 2410517-85-8)
- Methyl 6-amino-6-deoxy-2,3,4-tracetate-D-glucopyranoside (CAS 715649-25-5)
- 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic Acid (CAS 90-20-0)
- 3-Amino-6-phenyl-4-(trifluoromethyl)thieno[2,3-b]pyridine-2-carbonitrile (CAS 104960-55-6)
Recommended Standards
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