5-Chlorothiazole-2-carboxamide CAS 98027-07-7
| CAS No. | 98027-07-7 |
| Molecular Formula | C4H3ClN2OS |
| Molecular Weight | 162.60 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.
5-Chlorothiazole-2-carboxamide (CAS 98027-07-7) is a high-purity analytical reference standard with the molecular formula C4H3ClN2OS and a molecular weight of 162.60 g/mol.
Owing to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, 5-Chlorothiazole-2-carboxamide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 162.60 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 5-Chlorothiazole-2-carboxamide 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 | C4H3ClN2OS |
| Molecular Weight | 162.60 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chlorothiazole Standards
- 2-Chlorothiazole-4-carboxamide (CAS 928256-35-3)
- 2-Chlorothiazole-5-carboxamide (CAS 761454-63-1)
- 5-Chlorothiazole-2-carboxylic Acid (CAS 101012-16-2)
- 4-Chlorothiazole-2-carboxylic acid (CAS 1211521-70-8)
- 5-Chlorothiazole-4-carboxylic acid (CAS 1505987-37-0)
- 2-Chlorothiazole-4-carboxylic Acid (CAS 5198-87-8)
- 2-Chlorothiazole-5-carboxylic acid (CAS 101012-12-8)
- Methyl 4-chlorothiazole-5-carboxylate (CAS 1015591-57-7)
Recommended Standards
- 4-Methyl-1,2,3-thiadiazole-5-carbonyl chloride 4-methyl-[1,2,3]thiadiazole-5-carbonyl chloride 5-Chlorocarbonyl-4-methyl-1,2,3-thiadiazole 59944-65-9 (CAS 59944-65-9)
- 3-Chloro-2-fluorobenzenethiol (CAS 1121585-29-2)
- 2-Amino-4-chlorothiazole-5-carbaldehyde (CAS 76874-79-8)
- 2-methyltetrahydropyran-2-carbonyl chloride (CAS 115261-81-9)
- 4-Methoxythiophene-2-thiol (CAS 1082350-78-4)
- 4-Cyclopropoxy-6-methylpyridin-3-amine (CAS 1243288-49-4)
- Ethyl 2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]-2-{[(3-methoxyphenyl)methyl]carbamoyl}acetate (CAS 478063-74-0)
- Encorafenib Impurity 11 (CAS CATO-C4X-32411)
- (2-Methylbenzo[b]thiophen-3-yl)boronic acid (CAS 881998-67-0)
- 5-Hydrazinyl-2-(trifluoromethyl)pyrimidine (CAS 123418-92-8)
- 1-(1h-Pyrazol-1-yl)propan-2-amine (CAS 936940-15-7)
- 6-Bromo-N-(cyclopropylmethyl)pyridin-2-amine (CAS 351421-77-7)
- 3-Bromo-[1,3]dioxolo[4,5-g]cinnolin-4(1H)-one (CAS 28657-77-4)
- Semaglutide Impurity 144 (CAS 394210-59-4)
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