Thieno[2,3-b]quinoline-2-carboxylic acid CAS 52026-70-7
| CAS No. | 52026-70-7 |
| Molecular Formula | C12H7NO2S |
| Molecular Weight | 229.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Thieno[2,3-b]quinoline-2-carboxylic acid (CAS 52026-70-7), a certified reference material (molecular formula C12H7NO2S, MW 229.25 g/mol) for analytical method development and quality control.
Structurally, Thieno[2,3-b]quinoline-2-carboxylic acid (C12H7NO2S) 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 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 229.25 g/mol, it falls into the medium-molecular-weight range. 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.
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.
Physical & Chemical Properties
| Molecular Formula | C12H7NO2S |
| Molecular Weight | 229.25 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.) | 1971 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Thieno Standards
- Thieno[3,2-f]quinoline-2-carboxylic acid (CAS 1619264-46-8)
- 32281-36-0 NSC149690 thieno[2,3-f]benzothiophene-4,8-dione {Benzo[1,2-b:4,5-b]dithiophene-4,8-dione} (CAS 32281-36-0)
- Thieno[3,2-b]thiophene-2,5-dicarboxylic acid (CAS 18646-81-6)
- Thieno[3,2-b]thiophene-2,5-diyldiboronic acid (CAS 1281324-46-6)
- (2S)-2-({thieno[2,3-d]pyrimidin-4-yl}amino)propanoic acid (CAS 63895-63-6)
- 2-({thieno[2,3-d]pyrimidin-4-yl}amino)propanoic acid (CAS 71635-48-8)
- (thieno[2,3-d]pyrimidin-4-ylthio)acetic acid (CAS 18740-26-6)
- 4H-Thieno[3,2-c][1]benzopyran-2-carboxylic acid (CAS 26268-04-2)
Recommended Standards
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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