Methyl 2-acetamido-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate CAS 328023-40-1
| CAS No. | 328023-40-1 |
| Molecular Formula | C11H13NO3S |
| Molecular Weight | 239.29 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.
CATO supplies Methyl 2-acetamido-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate (CAS 328023-40-1), a certified reference material (molecular formula C11H13NO3S, MW 239.29 g/mol) for analytical method development and quality control.
The molecular framework of Methyl 2-acetamido-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate (C11H13NO3S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C11H13NO3S |
| Molecular Weight | 239.29 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 2-Acetamido-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylic acid (CAS 13130-43-3)
- 2-(3-Acetamido-4-methoxyphenoxy)acetic acid (CAS 1239737-58-6)
- 2-Acetamido-4,5-dimethoxybenzoic acid (CAS 145352-75-6)
- 3-Acetamido-4,5-dimethoxybenzoic acid (CAS 871892-91-0)
- 4-Acetamido-6-hydroxyisophthalic acid (CAS 408336-10-7)
- Methyl 2-acetamido-2-(dimethoxyphosphoryl)acetate (CAS 89524-99-2)
- 2-Acetamido-3-(4-chlorophenyl)acrylic acid (CAS 3617-00-3)
- Methyl 5-acetamido-2-amino-3-methoxybenzoate (CAS 1511113-39-5)
Recommended Standards
- Methyl 2-((4-acetamidophenyl)thio)acetate (CAS 899016-18-3)
- Methyl 3-(3,3-dimethyl-2-oxoazetidin-1-yl)thiophene-2-carboxylate (CAS 339100-30-0)
- Ethyl N-[[(5-methyl-2-pyridinyl)amino]thioxomethyl]carbamate (CAS 37890-99-6)
- Methyl 4-(2-(methylthio)acetamido)benzoate (CAS 851111-33-6)
- 4,6-Dichloro-5-methyl-2-pyrimidinamine (CAS 7153-13-1)
- 4,5,6,7-Tetrafluorobenzo[d]thiazole-2(3H)-thione (CAS 786657-51-0)
- 9-(Methylamino)-1H-phenalen-1-one (CAS 69454-54-2)
- 3-((Methylsulfinyl)methyl)-4-(octyloxy)aniline (CAS 5819-61-4)
- (1S,2S)-Boc-aminocyclopentane carboxylic acid (CAS 143679-80-5)
- 2,5-Dioxopyrrolidin-3-yl acetate (CAS 191592-48-0)
- 5-(1-Benzyl-5-chloro-1H-1,3-benzodiazol-2-yl)-1,2-dihydropyridin-2-one (CAS 400075-96-9)
- 3,4-Dimethoxypicolinonitrile (CAS 348635-43-8)
- 7-Bromo-6-methylchroman-4-one (CAS 1273604-53-7)
- Des-Val23-Tirzepatide (CAS CATO-CPTD788950)
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