3-Methyl-2-nitrothiophene CAS 32059-75-9
| CAS No. | 32059-75-9 |
| Molecular Formula | C5H5NO2S |
| Molecular Weight | 143.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Methyl-2-nitrothiophene (CAS 32059-75-9), molecular formula C5H5NO2S and molecular weight 143.16 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H5NO2S, 3-Methyl-2-nitrothiophene contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 143.16 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
As a certified reference material (CRM), 3-Methyl-2-nitrothiophene meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C5H5NO2S |
| Molecular Weight | 143.16 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 2-MEthyl-3-nitrothiophene (CAS 2530-09-8)
- 2-Methyl-5-nitrothiophene (CAS 42297-94-9)
- 3-MEthyl-4-nitrothiophene (CAS 39920-22-4)
- 4-MEthyl-2-nitrothiophene (CAS 344591-56-6)
- 550379-21-0 5-Nitrothiophene-2-ol DTXSID10609503 (CAS 550379-21-0)
- 609-40-5 2-Nitrothiophene Thiophene, 2-nitro- AI3-16618 EINECS 210-190-9 NSC 5371 (CAS 609-40-5)
- 2-Nitrothiophene-3-carbonitrile (CAS 85598-50-1)
- 3-Nitrothiophene-2-carbonitrile (CAS 85598-51-2)
Recommended Standards
- 3-Methoxyisothiazole-5-carbaldehyde (CAS 300768-05-2)
- 3-Hydroxythiophene-2-carboxamide (CAS 57059-24-2)
- 3-Methylisothiazole-5-carboxylic acid (CAS 66975-83-5)
- 3-Amino-2-thiophenecarboxylic Acid (CAS 55341-87-2)
- tert-Butyl 6-chloro-2-oxospiro[indoline-3,3'-pyrrolidine]-1'-carboxylate (CAS 2384972-65-8)
- 2-(2,4-dichloro-6,7-dihydropyrimido[5,4-b][1,4]oxazin-8-yl)ethyl methanesulfonate (CAS 2756855-40-8)
- Methyl 6-Aminopyridine-2-carboxylate (CAS 36052-26-3)
- 1,4-Diamino-2-(4-methoxyphenyl)anthracene-9,10-dione (CAS 1573-83-7)
- 4-(3-(4-Chlorobenzoyl)-1H-pyrrolo[2,3-b]pyridin-5-yl)benzamide (CAS 858118-33-9)
- Ethyl 2,2-Difluoro-2-(2-nitrophenyl)acetate (CAS 1308915-12-9)
- 6-Chloro-[3,4'-bipyridin]-5-amine (CAS 117514-86-0)
- 5-(Pyrrolidin-1-yl)pyridin-2-amine dihydrochloride (CAS 2137624-63-4)
- Benzyl-[2-(1H-indol-3-yl)-ethyl]-amineoxalate (CAS 1048326-81-3)
- Pancreatic Polypeptide (bovine) (CAS 179986-89-1)
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