3-nitro-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one CAS 7507-93-9
| CAS No. | 7507-93-9 |
| Molecular Formula | C11H11NO3 |
| Molecular Weight | 205.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C11H11NO3, 3-nitro-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 205.21 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).
3-nitro-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one (CAS 7507-93-9), molecular formula C11H11NO3 and molecular weight 205.21 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C11H11NO3 |
| Molecular Weight | 205.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Nitrogen Atoms | 1 |
Related nitro Standards
- 3-Nitro-6,7,8,9-tetrahydro-5h-benzo[7]annulen-6-one (CAS 152356-64-4)
- 1-Nitro-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one (CAS 251554-42-4)
- 2-(4-Nitro-1h-indol-3-yl)ethan-1-amine (CAS 90840-45-2)
- 2-(5-nitro-1H-indol-3-yl)ethan-1-amine (CAS 55747-72-3)
- 2-(6-Nitro-1h-indol-3-yl)ethan-1-amine (CAS 90840-46-3)
- 2-Nitro-8,9-dihydro-5H-benzo[7]annulen-7(6H)-one (CAS 740842-50-6)
- 3-Nitro-4-(propylamino)benzonitrile (CAS 438554-06-4)
- 5-Nitro-2-(propylamino)benzonitrile (CAS 731811-59-9)
Recommended Standards
- 3-Oxo-N-phenylpyrazolidine-1-carboxamide (CAS 303994-72-1)
- 3-Methyl-5-(1-methyl-1H-pyrazol-5-yl)-1H-pyrrole-2-carboxylic acid (CAS 2092232-91-0)
- 4-((1,3-Dioxolan-2-yl)methoxy)benzonitrile (CAS 850350-15-1)
- 3-Methoxy-5-(4-methoxyphenyl)-1H-1,2,4-triazole (CAS 62036-06-0)
- tert-Butyl 1-(4-Oxocyclohexyl)cyclopropanecarboxylate (CAS 1620075-92-4)
- 6-(4-Methylpiperazin-1-yl)pyrazine-2-carbonitrile (CAS 104169-57-5)
- 1-(3-{[5-(2-chlorophenoxymethyl)-1,3,4-oxadiazol-2-yl]sulfanyl}propyl)-2,3-dihydro-1H-1,3-benzodiazol-2-one (CAS 949847-41-0)
- (E)-({4-[4-(2,4-dichlorobenzoyl)piperazin-1-yl]-3-nitrophenyl}methylidene)(methoxy)amine (CAS 383147-25-9)
- Memantine Impurity 67 (CAS CATO-C4X-105867)
- Ethyl 5-(trifluoromethoxy)pyrazine-2-carboxylate (CAS 1261809-69-1)
- Pitavastatin Impurity 52 (CAS CATO-C4X-103752)
- 3-Cyclobutylpyridin-2-amine hydrochloride (CAS 2514723-49-8)
- 1-Benzyl-3-chloro-5-methyl-1H-1,2,4-triazole (CAS 1322604-99-8)
- [D-Phe22]Semaglutide (CAS CATO-C4X-2226222)
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