3-Aminonaphthalene-2,7-disulfonic acid CAS 92-28-4
| CAS No. | 92-28-4 |
| Molecular Formula | C10H9NO6S2 |
| Molecular Weight | 303.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
CATO supplies 3-Aminonaphthalene-2,7-disulfonic acid (CAS 92-28-4), a certified reference material (molecular formula C10H9NO6S2, MW 303.31 g/mol) for analytical method development and quality control.
Structurally, 3-Aminonaphthalene-2,7-disulfonic acid (C10H9NO6S2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 303.31 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C10H9NO6S2 |
| Molecular Weight | 303.31 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 Aminonaphthalene Standards
- 6-Aminonaphthalene-1,3-disulfonic acid (CAS 118-33-2)
- 5-Aminonaphthalene-1,3-disulfonic acid (CAS 13306-42-8)
- 1-Aminonaphthalene-2,6-disulfonic acid (CAS 16144-92-6)
- 4-Aminonaphthalene-2,7-disulfonic acid (CAS 6251-07-6)
- 5-Aminonaphthalene-1-sulfonyl chloride (CAS 145061-31-0)
- 4-Aminonaphthalene-2,6-dicarboxylic acid (CAS 1638156-88-3)
- 4-aminonaphthalene-1,8-dicarboxylic anhydride;6-Aminobenz[de]isochromene-1,3-dione 6-Amino-benzo[de]isoquinoline-1,3-dione 6492-86-0 A8840 (CAS 6492-86-0)
- 8-Aminonaphthalene-1,3,6-trisulfonic acid (CAS 117-42-0)
Recommended Standards
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- 2-Keto molinate (CAS 24928-89-0)
- (2-Fluoropyridin-3-yl)(pyridin-3-yl)methanol (CAS 944686-78-6)
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