7-Nitrobenzo[b]thiophene-3-carbaldehyde CAS 109771-38-2
| CAS No. | 109771-38-2 |
| Molecular Formula | C9H5NO3S |
| Molecular Weight | 207.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
7-Nitrobenzo[b]thiophene-3-carbaldehyde (C9H5NO3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
7-Nitrobenzo[b]thiophene-3-carbaldehyde (CAS 109771-38-2) is a high-purity analytical reference standard with the molecular formula C9H5NO3S and a molecular weight of 207.21 g/mol.
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.
CATO manufactures 7-Nitrobenzo[b]thiophene-3-carbaldehyde 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 | C9H5NO3S |
| Molecular Weight | 207.21 g/mol |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Nitrobenzo Standards
- 5-Nitrobenzo[b]thiophene-2-carbaldehyde (CAS 4688-16-8)
- 5-Nitrobenzo[c]isoxazole-3-carboxylic acid (CAS 146426-39-3)
- 5-Nitrobenzo[d]isoxazole-3-carboxylic acid (CAS 28691-51-2)
- 6-Nitrobenzo[c]isoxazole-3-carboxylic acid (CAS 6501-77-5)
- 6-Nitrobenzo[d]isoxazole-3-carboxylic acid (CAS 28691-50-1)
- 2-(5-Nitrobenzo[d]isoxazol-3-yl)ethanol (CAS 642087-62-5)
- 6-Nitrobenzo[d]thiazole-2-carbaldehyde (CAS 831-44-7)
- 2-Ethyl-5-nitrobenzo[d]thiazole (CAS 134477-11-5)
Recommended Standards
- N-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-sulfonamide (CAS 1094715-34-0)
- 3-Fluoro-2-hydrazinyl-5-(1-methyl-1H-pyrazol-4-yl)pyridine, 97% (CAS 1151802-50-4)
- 4-(Pyridin-4-yl)-1,2,3-thiadiazole-5-carboxylic acid (CAS 1083401-67-5)
- 2-(Pyrazin-2-yl)-1,3-thiazole-4-carboxylic acid (CAS 115311-44-9)
- 4-Amino-5-methylpicolinonitrile (CAS 1805622-06-3)
- 1-[4-(2-Chlorophenoxy)butyl]-1H-pyrazol-4-amine (CAS 1240569-41-8)
- N-ethyl-4-phenyl-2-(pyridin-3-yl)pyrimidine-5-carboxamide (CAS 400079-49-4)
- Etizolam Impurity 7 (CAS 91663-72-8)
- Relebactam Impurity 96 (CAS 1174019-13-6)
- 4-((4-Bromo-1h-pyrazol-1-yl)methyl)benzohydrazide (CAS 512809-88-0)
- 4-(Aminomethyl)-3,5-diethylisoxazole (CAS 1384429-16-6)
- 2,4-Dicyanobenzoic acid (CAS 64576-62-1)
- 3-Amino-3-(4-methylcyclohexyl)propan-1-ol (CAS 1491417-01-6)
- Tirzepatide Impurity 15 (CAS CATO-C4X-324015)
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