3-Methoxythiophene-2-carbaldehyde CAS 35134-07-7
| CAS No. | 35134-07-7 |
| Molecular Formula | C6H6O2S |
| Molecular Weight | 142.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-Methoxythiophene-2-carbaldehyde (CAS 35134-07-7), molecular formula C6H6O2S and molecular weight 142.18 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C6H6O2S, 3-Methoxythiophene-2-carbaldehyde contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 142.18 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).
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 | C6H6O2S |
| Molecular Weight | 142.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Sulfur Atoms | 1 |
Related Methoxythiophene Standards
- 4-Methoxythiophene-2-carbaldehyde (CAS 98316-32-6)
- 4-Methoxythiophene-3-carbaldehyde (CAS 82069-74-7)
- 5-Methoxythiophene-3-carbaldehyde (CAS 78395-10-5)
- 3-Methoxythiophene-2-carbonitrile (CAS 57059-18-4)
- 5-Methoxythiophene-2-carbonitrile (CAS 58703-25-6)
- 2-methoxythiophene-3-carbaldehyde (CAS 41057-07-2)
- 4-Methoxythiophene-2-thiol (CAS 1082350-78-4)
- (E)-3-methoxythiophene-2-carbaldehyde oxime (CAS 1824827-05-5)
Recommended Standards
- 3-(Methylsulfinyl)pyridazine (CAS 21948-78-7)
- 3-Methyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (CAS 576-28-3)
- 2-Thiabicyclo[3.1.0]hex-3-ene-6-carboxylic acid (CAS 856656-74-1)
- 4-(Methylthio)furan-2-carbaldehyde (CAS 639465-53-5)
- ethyl 2-(ethylamino)benzoate (CAS 38446-21-8)
- 4-Amino-4-(3-bromo-4-methoxyphenyl)butanoic acid (CAS 1039928-17-0)
- Rp-8-Br-PET-cGMPs (CAS 185246-32-6)
- Methyl 2-acetyl-5-bromo-4-(trifluoromethyl)benzoate (CAS 2654747-32-5)
- 2-Propylpiperidin-4-one hydrochloride (CAS 59663-72-8)
- N-((1-ethyl-3-methyl-1H-pyrazol-4-yl)methyl)-2,2,2-trifluoroacetamide (CAS 515176-14-4)
- 1-(2-Chloro-6-fluorophenyl)-2-methylpropan-2-amine (CAS 1017184-47-2)
- 5-Fluoro-2-(pyridin-2-yl)pyrimidin-4(3H)-one (CAS 1240596-22-8)
- 3-(Benzyloxy)benzo[b]thiophene-2-carboxylic acid (CAS 722517-00-2)
- Semaglutide impurity 44 (CAS CATO-C4X-222644)
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