2-Chloro-1-(1-(3,4-dimethoxyphenyl)-2,5-dimethyl-1h-pyrrol-3-yl)ethan-1-one CAS 923769-79-3
| CAS No. | 923769-79-3 |
| Molecular Formula | C16H18ClNO3 |
| Molecular Weight | 307.77 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Chloro-1-(1-(3,4-dimethoxyphenyl)-2,5-dimethyl-1h-pyrrol-3-yl)ethan-1-one (CAS 923769-79-3), molecular formula C16H18ClNO3 and molecular weight 307.77 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 2-Chloro-1-(1-(3,4-dimethoxyphenyl)-2,5-dimethyl-1h-pyrrol-3-yl)ethan-1-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 307.77 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | C16H18ClNO3 |
| Molecular Weight | 307.77 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 2-[(E)-(2-Chlorophenyl)methylidene]-2,3,4,9-tetrahydro-1H-carbazol-1-one (CAS 866138-45-6)
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- (E)-3-(4-Chlorobut-2-en-1-yl)-7,8-dimethoxy-1,3-dihydro-2H-benzo[d]azepin-2-one (CAS 847737-94-4)
- 4-((4-Chlorophenyl)(phenyl)amino)benzaldehyde (CAS 89115-22-0)
- 1-(3,4-Dichlorophenyl)-2-(3-fluorophenyl)ethan-1-one (CAS 1098344-00-3)
- N-{1-[(4-Methoxyphenyl)sulfonyl]-4-piperidinyl}benzenecarboxamide (CAS 606112-96-3)
- 6-METHOXY-2-METHYL-1,5-NAPHTHYRIDIN-4(1H)-ONE (CAS 872801-99-5)
- 2-Amino-4-(4-bromophenyl)-2-methylbutanenitrile hydrochloride (CAS 1794300-69-8)
- Atorvastatin Impurity 124 (CAS 666714-64-3)
- Ethyl N-[(Z)-[2-(3-chlorophenyl)hydrazin-1-ylidene](cyano)carbonyl]carbamate (CAS 478048-45-2)
- Benzyl (4-((2-aminoethyl)(isopropyl)amino)cyclohexyl)carbamate (CAS 1353962-74-9)
- 5-Fluoro-2-(3-fluoropropyl)pentan-1-ol (CAS 2571070-44-3)
- 2-Chloro-4-methyl-6-phenylimidazo[1,5-a]pyrimidine (CAS 79899-10-8)
- Semaglutide impurity 37 (CAS CATO-C4X-222637)
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