Sodium anthraquinone-2-sulfonate CAS 131-08-8
| CAS No. | 131-08-8 |
| Molecular Formula | C14H19O5S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Sodium anthraquinone-2-sulfonate (CAS 131-08-8) is a high-purity analytical reference standard with the molecular formula C14H19O5SNa and a molecular weight of 322.35 g/mol.
Based on its molecular formula C14H19O5SNa, Sodium anthraquinone-2-sulfonate 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 322.35 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.
As a certified reference material (CRM), Sodium anthraquinone-2-sulfonate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C14H19O5S Na |
| Molecular Weight | 322.35 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 1 |
Related Sodium Standards
- Anthraquinone-d8 (CAS 10439-39-1)
- Anthraquinone Impurity 5 (CAS 116-78-9)
- Anthraquinone-2-carboxylic Acid (CAS 117-78-2)
- Anthraquinone-2-sulfonate sodium salt monohydrate (CAS 153277-35-1)
- Anthraquinone Related Compound 1 (CAS 17062-54-3)
- Anthraquinone Impurity 2 (CAS 2961-04-8)
- Anthraquinone monohydrazone (CAS 3166-13-0)
- Anthraquinone-2-trimethylÂammonium chloride (CAS 400853-24-9)
Recommended Standards
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- 3-Methyl-2-morpholinobutanenitrile (CAS 409108-65-2)
- N-(4-Chloro-2-methoxy-5-methylphenyl)-2,3-dihydrobenzo[b][1,4]dioxine-2-carboxamide (CAS 449170-44-9)
- N-[2-(Indol-3-yl-2,4,5,6,7-d5)acetyl]-L-valine-15N (CAS 1201012-76-1)
- 2-((Pyridin-3-ylmethyl)amino)nicotinonitrile (CAS 906214-79-7)
- 2-((5-(2-Chlorophenyl)-1,3,4-oxadiazol-2-yl)thio)-N-phenylacetamide (CAS 332161-36-1)
- N-Methyl-L-Z-Valinamide (CAS 128647-50-7)
- Clotrimazole Impurity 24 (CAS 98751-53-2)
- [D-His]-Semaglutide B (x TFA Salt) (CAS CATO-C4X-2226117)
Why CATO?
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