2-((1-Methyl-4-nitro-1H-pyrazol-3-yl)thio)acetic acid CAS 1443279-60-4
| CAS No. | 1443279-60-4 |
| Molecular Formula | C6H7N3O4S |
| Molecular Weight | 217.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-((1-Methyl-4-nitro-1H-pyrazol-3-yl)thio)acetic acid (CAS 1443279-60-4) is a high-purity analytical reference standard with the molecular formula C6H7N3O4S and a molecular weight of 217.20 g/mol.
Based on its molecular formula C6H7N3O4S, 2-((1-Methyl-4-nitro-1H-pyrazol-3-yl)thio)acetic acid contains an amide group, 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 217.20 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).
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 | C6H7N3O4S |
| Molecular Weight | 217.20 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 2-((1-Methyl-4-nitro-1H-imidazol-5-yl)thio)acetic acid (CAS 6339-60-2)
- 2-[(3-methyl-4-nitro-1h-pyrazol-5-yl)sulfanyl]acetic acid (CAS 879565-31-8)
- 2-Nitro-4-methylsulphonyl-phenol (CAS 97-10-9)
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- 3-Chloro-N-(4-(phenylamino)phenyl)benzamide (CAS 420814-14-8)
- 5-[3-(Dimethylamino)propyl]-1,3,5-triazinane-2-thione (CAS 304700-48-9)
- 8-(2-Aminoethyl)-5-hydroxy-2H-benzo[b][1,4]oxazin-3(4H)-one (CAS 1035492-00-2)
- N-(4-((1H-Indol-1-yl)sulfonyl)phenyl)acetamide (CAS 184538-44-1)
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