5-Nitrothiophene-2-carboxaldehyde 5-nitro-2-thiophenecarboxaldehyde 5-Nitrothiophene-2-carbaldehyde 5-nitro-thiophene-2-carbaldehyde 5-nitro-2-thiophenecarbaldehyde 4521-33-9 CAS 4521-33-9
| CAS No. | 4521-33-9 |
| Molecular Formula | C5H7NO3S |
| Molecular Weight | 161.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 5-Nitrothiophene-2-carboxaldehyde 5-nitro-2-thiophenecarboxaldehyde 5-Nitrothiophene-2-carbaldehyde 5-nitro-thiophene-2-carbaldehyde 5-nitro-2-thiophenecarbaldehyde 4521-33-9 (CAS 4521-33-9), a certified reference material (molecular formula C5H7NO3S, MW 161.18 g/mol) for analytical method development and quality control.
Structurally, 5-Nitrothiophene-2-carboxaldehyde 5-nitro-2-thiophenecarboxaldehyde 5-Nitrothiophene-2-carbaldehyde 5-nitro-thiophene-2-carbaldehyde 5-nitro-2-thiophenecarbaldehyde 4521-33-9 (C5H7NO3S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 161.18 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H7NO3S |
| Molecular Weight | 161.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Nitrothiophene Standards
- 2-nitrothiophene-3-carbaldehyde (CAS 41057-04-9)
- 4-nitrothiophene-2-carbaldehyde (CAS 57500-53-5)
- 5-nitrothiophene-3-carbaldehyde (CAS 75428-45-4)
- 3-Nitrothiophene-2-carbaldehyde (CAS 58963-75-0)
- 4-Nitrothiophene-3-carbaldehyde (CAS 39920-24-6)
- 5-Methyl-3-nitrothiophene-2-carbonitrile (CAS 1027512-56-6)
- 3-Methyl-5-nitrothiophene-2-carbonitrile (CAS 1881321-64-7)
- 2-Nitrothiophene-3-carbonitrile (CAS 85598-50-1)
Recommended Standards
- n-Methyl-1h-imidazole-4-sulfonamide (CAS 58768-15-3)
- 3-cyclopropyl-4-fluorobenzonitrile (CAS 1260539-08-9)
- N,1-Dimethyl-1-oxo-1phosphinan-4-amine (CAS 2711976-41-7)
- Acetylcysteine Impurity 14 (CAS 62305-89-9)
- Methyl 1-methylpyrrolidine-2-carboxylate (CAS 933-94-8)
- 2-(Methylthio)-N-(4,5,6,7-tetrahydrobenzo[d]thiazol-2-yl)nicotinamide (CAS 735302-86-0)
- 2-Fluoro-5-(methoxycarbonyl)phenylboronic Acid (CAS 850568-04-6)
- (2-(Hydroxymethyl)furan-3-yl)boronic acid (CAS 938443-34-6)
- Salbutamol Impurity 204 (CAS CATO-C4X-1176204)
- 4-Fluoro-5-hydroxyindole-3-acetic acid (CAS 1227508-53-3)
- N,N'-(9,10-Dioxo-9,10-dihydroanthracene-1,5-diyl)bis(2,3,4,5-tetrachlorobenzamide) (CAS 27685-83-2)
- 2-(1H-Inden-3-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2374803-13-9)
- Aztreonam impurity 102 (CAS CATO-C4X-1522102)
- Peptide Impurity 82 (CAS 10491-78-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com