Sulfamethoxazole CAS 723-46-6
| CAS No. | 723-46-6 |
| Molecular Formula | C10H11N3O3S |
| Molecular Weight | 253.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 253.28 g/mol gives Sulfamethoxazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Sulfamethoxazole (CAS 723-46-6), a certified reference material (molecular formula C10H11N3O3S, MW 253.28 g/mol) for analytical method development and quality control.
Structurally, Sulfamethoxazole (C10H11N3O3S) 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 253.28 g/mol, it falls into the medium-molecular-weight range. 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), Sulfamethoxazole 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 | C10H11N3O3S |
| Molecular Weight | 253.28 g/mol |
| Purity | >95% |
| 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 | 3 |
| Sulfur Atoms | 1 |
Related Sulfamethoxazole Standards
- Sulfamethoxazole EP Impurity F (CAS 17103-52-5)
- Sulfamethoxazole-d4 (CAS 1020719-86-1)
- Sulfamethoxazole-13C6 (CAS 1196157-90-0)
- Sulfamethoxazole EP Impurity A (CAS 21312-10-7)
- Sulfamethoxazole Impurity 9 (CAS 18607-98-2)
- Sulfamethoxazole EP Impurity B (CAS 135529-16-7)
- Sulfamethoxazole EP Impurity C (CAS 1072-67-9)
- Sulfamethoxazole Impurity 11 (CAS CATO-C4X-190911)
Recommended Standards
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