4-Methylthiazole-5-carboxylic acid hydrochloride CAS 1184982-16-8
| CAS No. | 1184982-16-8 |
| Molecular Formula | C5H5NO2S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 179.62 g/mol gives 4-Methylthiazole-5-carboxylic acid hydrochloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Methylthiazole-5-carboxylic acid hydrochloride (CAS 1184982-16-8), molecular formula C5H5NO2SHCl and molecular weight 179.62 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H5NO2SHCl, 4-Methylthiazole-5-carboxylic acid hydrochloride contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 179.62 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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), 4-Methylthiazole-5-carboxylic acid hydrochloride 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 | C5H5NO2S HCl |
| Molecular Weight | 179.62 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methylthiazole Standards
- 4-Methylthiazole-2-carbonitrile (CAS 100516-98-1)
- 5-Methylthiazole-4-carbohydrazide (CAS 100517-03-1)
- Sodium 4-Methylthiazole-2-acetate (CAS 1007036-41-0)
- 4-(4-Methylthiazole-5-carboxamido)butanoic acid (CAS 1016672-70-0)
- 1-(4-Methylthiazole-5-carbonyl)piperidine-3-carboxylic acid (CAS 1016732-78-7)
- 2-Methylthiazole-4-carbohydrazide (CAS 101767-28-6)
- 4-Methylthiazole-2,5-diamine (CAS 1076197-50-6)
- Sodium 5-methylthiazole-2-carboxylate (CAS 1107062-31-6)
Recommended Standards
- 5-(2,4,5-Trimethylphenyl)-1,2,4-triazin-3-amine (CAS 886497-06-9)
- 2-Amino-1-(4-bromophenyl)-4,5-dimethyl-1H-pyrrole-3-carbonitrile (CAS 72578-40-6)
- 8-Amino-6-fluoro-5-methylquinolin-2(1H)-one (CAS 1420792-26-2)
- 2-Bromo-6-(4-BOC-piperazino)benzaldehyde (CAS 1381944-27-9)
- 5-Hydroxy-2H-pyran-3(6H)-one (CAS 61363-75-5)
- Ticagrelor Impurity 155 (CAS 1482484-62-7)
- (8E)-2-Amino-4-[2-(trifluoromethyl)phenyl]-8-{[2-(trifluoromethyl)phenyl]methylidene}-4H,5H,7H,8H-pyrano[3,2-c]pyran-3-carbonitrile (CAS 445390-77-2)
- Celecoxib Impurity 23 (CAS 2247197-65-3)
- (S)-3-(3,5-Dimethyl-4-((1,2,3,4-tetrahydrobenzo[4,5]imidazo[1,2-a]pyrimidin-9-yl)oxy)benzamido)-3-(pyridin-3-yl)propanoic acid (CAS 1956437-34-5)
- Semaglutide Impurity 6 (CAS 62-57-7)
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