Ethyl (E)-2-acetamido-5-(1-(hydroxyimino)ethyl)-4-phenylthiophene-3-carboxylate CAS 331760-56-6
| CAS No. | 331760-56-6 |
| Molecular Formula | C17H18N2O4S |
| Molecular Weight | 346.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ethyl (E)-2-acetamido-5-(1-(hydroxyimino)ethyl)-4-phenylthiophene-3-carboxylate.
Ethyl (E)-2-acetamido-5-(1-(hydroxyimino)ethyl)-4-phenylthiophene-3-carboxylate (CAS 331760-56-6), molecular formula C17H18N2O4S and molecular weight 346.40 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Ethyl (E)-2-acetamido-5-(1-(hydroxyimino)ethyl)-4-phenylthiophene-3-carboxylate (C17H18N2O4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 346.40 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Ethyl (E)-2-acetamido-5-(1-(hydroxyimino)ethyl)-4-phenylthiophene-3-carboxylate 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 | C17H18N2O4S |
| Molecular Weight | 346.40 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
- Diphenyl isooctyl phosphite (CAS 26401-27-4)
- Ethyl 2-({5-[(4-methoxyphenyl)carbamoyl]pyridin-2-yl}sulfanyl)acetate (CAS 339030-25-0)
- Cyanomethyl N-(2-cyano-4,5-dimethoxyphenyl)morpholine-4-carbimidothioate (CAS 866039-88-5)
- Methyl 3-(2-(2-oxo-2-(piperidin-1-yl)acetyl)-1H-pyrrol-1-yl)thiophene-2-carboxylate (CAS 477857-74-2)
- 1-(3-Bromopropyl)-1H-pyrazole (CAS 956528-77-1)
- 2-(3-Amino-5-methyl-1h-pyrazol-1-yl)-n,n-dimethylacetamide (CAS 1260379-31-4)
- 2-Amino-3-(3-fluorophenyl)propan-1-ol (CAS 35373-68-3)
- (2-(Piperidin-4-yl)pyrimidin-5-yl)boronic acid (CAS 2225179-09-7)
- 5-(Chloromethyl)-1-methyl-1H-indole (CAS 1895366-15-0)
- 2,2-dimethyl-N-[4-(trifluoroacetyl)pyridin-3-yl]propanamide (CAS 1803595-02-9)
- tert-Butyl ((1R,4S)-4-aminocyclopent-2-en-1-yl)carbamate (CAS 2440022-74-0)
- 2-Amino-2-(2-bromophenyl)acetonitrile (CAS 252637-89-1)
- Methyl 2-amino-5-(4-bromo-1h-pyrazol-1-yl)-2-methylpentanoate (CAS 1248026-60-9)
- Atrial Natriuretic Polypeptide (4-28), human (CAS 95896-08-5)
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