8-Methylthieno[2,3-b]quinoline-2-carboxylic acid CAS 333312-05-3
| CAS No. | 333312-05-3 |
| Molecular Formula | C13H9NO2S |
| Molecular Weight | 243.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 243.28 g/mol gives 8-Methylthieno[2,3-b]quinoline-2-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 8-Methylthieno[2,3-b]quinoline-2-carboxylic acid (CAS 333312-05-3), a certified reference material (molecular formula C13H9NO2S, MW 243.28 g/mol) for analytical method development and quality control.
Based on its molecular formula C13H9NO2S, 8-Methylthieno[2,3-b]quinoline-2-carboxylic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 243.28 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 8-Methylthieno[2,3-b]quinoline-2-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C13H9NO2S |
| Molecular Weight | 243.28 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methylthieno Standards
- 6-Methylthieno[2,3-b]quinoline-2-carboxylic acid (CAS 333312-07-5)
- 7-Methylthieno[2,3-b]quinoline-2-carboxylic acid (CAS 333312-06-4)
- 2-((6-Methylthieno[2,3-d]pyrimidin-4-yl)thio)acetic acid (CAS 890014-20-7)
- 2-((6-Methylthieno[2,3-d]pyrimidin-4-yl)thio)acetamide (CAS 876901-73-4)
- (6-Methylthieno[3,4-d][1,3]dioxol-4-yl)(phenyl)methanol (CAS 944522-55-8)
- 3-methylthieno[2,3-b]pyridine-2,5-dicarboxylic acid (CAS 949984-37-6)
- 5-acetyl-3-methylthieno[2,3-b]pyridine-2-carboxylic acid (CAS 1050885-00-1)
- 2-((6-Ethyl-2-methylthieno[2,3-d]pyrimidin-4-yl)amino)acetic acid (CAS 848280-81-9)
Recommended Standards
- 8-Hydroxydibenzo[b,f][1,4]thiazepin-11(10H)-one (CAS 3159-06-6)
- Benzoic acid, 4-(aminosulfonyl)-, propyl ester (CAS 59777-58-1)
- Ethyl 2-((5-isopropyl-1,3,4-thiadiazol-2-yl)amino)-2-oxoacetate (CAS 510763-27-6)
- 6-Morpholinopyridine-3-sulfonamide (CAS 90648-77-4)
- Benzonitrile, 3-bromo-4-(4-formyl-2-methoxyphenoxy)- (CAS 1055361-87-9)
- 2-Bromo-N-(3-isopropoxyphenyl)acetamide (CAS 918408-65-8)
- 3-[1-(3-Fluoro-4-methoxybenzoyl)piperidin-4-yl]-4-[(4-methylphenyl)methyl]-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 1775335-58-4)
- 1-((4-Nitrophenyl)sulfonyl)-4-(pyridin-2-yl)piperazine (CAS 71422-42-9)
- 5-(4-methoxyphenyl)pyrimidin-4-amine (CAS 35202-24-5)
- Lamotrigine Dimer Impurity 8 (CAS CATO-C4X-16728)
- Octahydroindolizin-1-amine (CAS 1114822-81-9)
- 4-(Aminomethyl)-5-(difluoromethyl)-3-iodopicolinic acid (CAS 1807138-06-2)
- 5-(4-Methoxybenzyl)-N-methyl-1,3,4-thiadiazol-2-amine (CAS 87410-81-9)
- Semaglutide impurity 229 (CAS CATO-C4X-2226229)
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