4-Nitro Sulfamethoxazole CAS 29699-89-6
| CAS No. | 29699-89-6 |
| Molecular Formula | C10H9N3O5S |
| Molecular Weight | 283.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Nitro Sulfamethoxazole (CAS 29699-89-6), a certified reference material (molecular formula C10H9N3O5S, MW 283.26 g/mol) for analytical method development and quality control.
Structurally, 4-Nitro Sulfamethoxazole (C10H9N3O5S) 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 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 283.26 g/mol, it falls into the medium-molecular-weight range. 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).
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.
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.
Physical & Chemical Properties
| Molecular Formula | C10H9N3O5S |
| Molecular Weight | 283.26 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 4-Chloro-3-cyclopropylpyridine hydrochloride (CAS 1998216-32-2)
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- 3-fluoro-5-hydroxy-4,7-dimethyl-chromen-2-one (CAS 2920243-35-0)
- 5-Fluoro-3,4-dihydroquinoxalin-2(1H)-one (CAS 148010-69-9)
- (2-(Allyloxy)-3-chloropyridin-4-yl)boronic acid (CAS 1987879-17-3)
- N'-pivaloyl-3-(1H-pyrrol-1-yl)thiophene-2-carbohydrazide (CAS 478062-81-6)
- (S)-1,1,1-TrifluoroisopropylamineHCl (CAS 125353-44-8)
- 2-(Methylthio)-1-(o-tolyl)ethan-1-one (CAS 132310-49-7)
- 4-{[(isoquinolin-5-yl)methyl]amino}butan-1-ol (CAS 1981888-22-5)
- Semaglutide impurity 28 (CAS CATO-C4X-222628)
Why CATO?
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