N-methoxy-N-methylthiophene-3-carboxamide CAS 357405-56-2
| CAS No. | 357405-56-2 |
| Molecular Formula | C7H9NO2S |
| Molecular Weight | 171.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 171.22 g/mol gives N-methoxy-N-methylthiophene-3-carboxamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
N-methoxy-N-methylthiophene-3-carboxamide (CAS 357405-56-2), molecular formula C7H9NO2S and molecular weight 171.22 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of N-methoxy-N-methylthiophene-3-carboxamide (C7H9NO2S) is characterized by an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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), N-methoxy-N-methylthiophene-3-carboxamide 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 | C7H9NO2S |
| Molecular Weight | 171.22 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related N Standards
- 5-Methoxy-2-(methylthio)pyrimidin-4-amine (CAS 89464-98-2)
- N-Methoxy-N-methylthiophene-2-carboxamide (CAS 229970-94-9)
- 3-methoxy-1H-indazol-6-amine (CAS 1056619-82-9)
- 1-(3-Methoxy-5,5-dimethyl-2,5-dihydro-1H-1,2,4-triazol-1-yl)ethanone (CAS 118807-32-2)
- 6-methoxy-octahydro-2H-1,4-benzoxazine (CAS 1427378-63-9)
- 5-methoxy-1H-indazol-6-amine (CAS 1892854-32-8)
- 1-(2-Methoxy-5-methylpyrrolidin-1-yl)propan-1-one (CAS 861384-72-7)
- 3-Methoxy-1-(piperidin-1-yl)propan-1-one (CAS 5830-21-7)
Recommended Standards
- o/p-Toluenesulfonamide (CAS 8013-74-9)
- n'-Hydroxy-2-(5-methyl-1,3-thiazol-2-yl)ethanimidamide (CAS 855991-69-4)
- S-((2-Methyl-2H-1,2,3-triazol-4-yl)methyl) ethanethioate (CAS 91616-08-9)
- N,N,4-trimethyl-1,2,3-thiadiazole-5-carboxamide (CAS 69636-11-9)
- Methyl (3R,5S)-4-aminoadamantane-1-carboxylate hydrochloride (CAS 1003872-58-9)
- 3-Chloro-5-fluoro-2-iodopyridine (CAS 514798-11-9)
- Dimethyl N-(Thioxomethylene)aspartate (CAS 121928-38-9)
- 2-Phenyl-4,5,6,7-tetrahydrooxazolo[5,4-c]pyridine hydrochloride (CAS 1187929-95-8)
- (2S)-Propane-1,2-diamine (CAS 15967-72-3)
- 4-Chloro-6-ethynylthieno[2,3-d]pyrimidine (CAS 552295-09-7)
- (R)-2-Cyclohexyl-2-hydroxyacetonitrile (CAS 100007-62-3)
- (3-Aminopropyl)urea (CAS 91900-47-9)
- 2-Methyl-4-nitrobenzene-1,3-diol (CAS 65938-75-2)
- Semaglutide impurity 50 (CAS 2773558-66-8)
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