5-Chloro-2-(methylthio)pyrimidine-4-carboxamide CAS 902243-56-5
| CAS No. | 902243-56-5 |
| Molecular Formula | C6H6ClN3OS |
| Molecular Weight | 203.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Chloro-2-(methylthio)pyrimidine-4-carboxamide (CAS 902243-56-5), a certified reference material (molecular formula C6H6ClN3OS, MW 203.65 g/mol) for analytical method development and quality control.
Based on its molecular formula C6H6ClN3OS, 5-Chloro-2-(methylthio)pyrimidine-4-carboxamide contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 203.65 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), 5-Chloro-2-(methylthio)pyrimidine-4-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 | C6H6ClN3OS |
| Molecular Weight | 203.65 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 4-chloro-1,3-dihydro-2$l^{6},1-benzothiazole-2,2-dione (CAS 111248-90-9)
- 6-chloro-1,3-dihydro-2$l^{6},1-benzothiazole-2,2-dione (CAS 111248-91-0)
- 5-chloro-1,3-dihydro-2$l^{6},1-benzothiazole-2,2-dione (CAS 111310-59-9)
- 5-chloro-6-(methylthio)nicotinic acid (CAS 1184743-95-0)
- 1-Chloro-4-(methylsulfanyl)-2-nitrobenzene (CAS 1199-36-6)
- 6-chloro-2-(methylsulfanyl)pyridine-3-carboxylic acid (CAS 1343727-62-7)
- 5-Chloro-2-(methylthio)isonicotinic acid (CAS 1596116-38-9)
- 2-Chloro-5-cyclopropylthiazole-4-carboxylic acid (CAS 1783543-40-7)
Recommended Standards
- 4-Chloro-5-((prop-2-yn-1-ylthio)methyl)isoxazol-3(2H)-one (CAS 89660-99-1)
- 5-Chloro-2,3-dihydrobenzo[d]isothiazole 1,1-dioxide (CAS 2515-75-5)
- 4-Chloro-5-((prop-1-yn-1-ylthio)methyl)isoxazol-3(2H)-one (CAS 89661-00-7)
- 6-Chloro-2-(methylthio)pyrimidine-4-carboxamide (CAS 6301-33-3)
- 6-Amino-5-ethynylnicotinonitrile (CAS 1027785-32-5)
- N-(4-Bromophenyl)-2-(4-(2-fluorophenyl)piperazin-1-yl)acetamide (CAS 708225-26-7)
- Zirconiumnitride,99% metals basis,400 mesh (CAS 25658-42-8)
- 2-amino-2-(3,5-dichlorophenyl)propan-1-ol hydrochloride (CAS 1909325-53-6)
- 5-Bromo-N-phenylpyrimidin-2-amine, 97% (CAS 886365-88-4)
- 4-Ethyl-1,2-dimethoxycyclohexa-1,4-diene (CAS 52662-22-3)
- 2-{2-[(2,4-Difluorobenzyl)oxy]ethyl}piperidinehydrochloride (CAS 1220016-57-8)
- Methyl (R)-3-amino-3-(4-fluoro-2-methoxyphenyl)propanoate (CAS 1213909-44-4)
- 2-(2-(Furan-2-ylmethylene)hydrazineyl)-5-(3-methoxybenzyl)thiazol-4(5H)-one (CAS 620541-60-8)
- Semaglutide impurity 277 (CAS CATO-C4X-2226277)
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