12H-Indolo[2,3-a]quinolizin-5-ium CAS 239-17-8
| CAS No. | 239-17-8 |
| Molecular Formula | C15H11N2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
12H-Indolo[2,3-a]quinolizin-5-ium (CAS 239-17-8) is a high-purity analytical reference standard with the molecular formula C15H11N2H2O4S and a molecular weight of 317.34 g/mol.
Based on its molecular formula C15H11N2H2O4S, 12H-Indolo[2,3-a]quinolizin-5-ium contains a flavonoid core, 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 317.34 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C15H11N2 H2O4S |
| Molecular Weight | 317.34 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related H Standards
- 1,1'-(Indolo[3,2-b]carbazole-5,11-diyl)diethanone (CAS 100456-54-0)
- 2-(6H-indolo[2,3-b]quinoxalin-6-yl)acetohydrazide (CAS 116989-58-3)
- 2-((5-((6H-Indolo[2,3-b]quinoxalin-6-yl)methyl)-4-phenyl-4H-1,2,4-triazol-3-yl)thio)acetic acid (CAS 116989-76-5)
- 2-((5-((6H-Indolo[2,3-b]quinoxalin-6-yl)methyl)-4-(4-methoxyphenyl)-4H-1,2,4-triazol-3-yl)thio)acetic acid (CAS 116989-77-6)
- Indolo[3,2,1-jk]carbazol-2-ylboronic acid (CAS 1174032-85-9)
- 5H-Indolo[2,1-c][1,4]benzodiazepine-6,12(5aH,7H)-dione (CAS 1246040-90-3)
- Indolo[2,1-b]quinazoline-6,12-dione (CAS 13220-57-0)
- Indolo[3,2-b]carbazole-6-carbaldehyde (CAS 1555757-10-2)
Recommended Standards
- Pimobendam (CAS 74150-27-9)
- 3-(4-Chlorophenyl)-5-((2-fluorobenzyl)thio)-4H-1,2,4-triazol-4-amine (CAS 573975-24-3)
- 2-(2,4-Dichlorophenyl)-1H-imidazo[4,5-b]pyridin-1-ol (CAS 339028-17-0)
- 2-(4-Methoxy-3,5-dimethylphenyl)propan-2-ol (CAS 1378860-10-6)
- Lornoxicam impurity 70 (CAS CATO-C4X-201670)
- 1-(Pyridin-4-yl)butan-2-ol (CAS 1281501-43-6)
- n-(1-Benzyl-1h-pyrazol-4-yl)-2-methoxyacetamide (CAS 942817-44-9)
- Ethyl 2-(dimethylamino)-6-formylpyrimidine-4-carboxylate (CAS 944901-67-1)
- (3-(Thiophen-2-yl)-1,2,4-oxadiazol-5-yl)methanamine hydrochloride (CAS 1225332-36-4)
- Semaglutide impurity 214 (CAS CATO-C4X-2226214)
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