4-Methyl-2-(1-methyl-1h-pyrazol-4-yl)-1,3-thiazole-5-carboxylic acid CAS 1152599-54-6
| CAS No. | 1152599-54-6 |
| Molecular Formula | C9H9N3O2S |
| Molecular Weight | 223.25 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.
4-Methyl-2-(1-methyl-1h-pyrazol-4-yl)-1,3-thiazole-5-carboxylic acid (CAS 1152599-54-6), molecular formula C9H9N3O2S and molecular weight 223.25 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Methyl-2-(1-methyl-1h-pyrazol-4-yl)-1,3-thiazole-5-carboxylic acid (C9H9N3O2S) 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 223.25 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.
Physical & Chemical Properties
| Molecular Formula | C9H9N3O2S |
| Molecular Weight | 223.25 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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.) | 1989 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Recommended Standards
- 4-(5-Amino-1,3,4-thiadiazol-2-yl)-2-methoxyphenol (CAS 114204-62-5)
- 4-(2-Amino-5-fluorobenzyl)-2-piperazinone (CAS 1153197-42-2)
- 2-(1,3-Benzoxazol-2-ylsulfanyl)acetohydrazide (CAS 113546-63-7)
- 1-(4-Fluorophenyl)-3-(pyrrolidin-3-yl)urea (CAS 1154968-68-9)
- 1-(3-Chloro-2,5-dimethoxyphenyl)-3-(4,6-dimethylpyrimidin-2-yl)guanidine (CAS 1306738-43-1)
- Ethyl 4-formyl-1-(p-tolyl)-1h-pyrazole-3-carboxylate (CAS 1159691-35-6)
- 2-[(3,5-Dimethylpiperidin-1-yl)methyl]-6-methylpyrimidin-4-ol (CAS 866155-52-4)
- 6-Amino-2-((3-bromobenzyl)thio)pyrimidin-4(3H)-one (CAS 166751-41-3)
- (2-Oxopiperidin-4-yl)boronic acid (CAS 2377587-43-2)
- 3-Chloro-1-(tetrahydrofuran-2-yl)-5,6,7,8-tetrahydroisoquinoline-4-carbonitrile (CAS 1707359-96-3)
- 7-(4-Chlorophenyl)-2-pentyl-[1,2,4]triazolo[1,5-a]pyridine-8-carbonitrile (CAS 860611-20-7)
- 1-(2-Nitro-4-(trifluoromethyl)phenyl)ethan-1-one (CAS 128403-22-5)
- 7-Methyl-2-(4-methylphenyl)imidazo[1,2-a]pyrimidin-5-ol (CAS 14247-67-7)
- Insulin Degludec Impurity 26 (CAS CATO-C4X-215726)
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