3-(4-Methoxyphenyl)-N,N-dimethyl-4-oxo-3,4-dihydrophthalazine-1-carboxamide CAS 338975-84-1
| CAS No. | 338975-84-1 |
| Molecular Formula | C18H17N3O3 |
| Molecular Weight | 323.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-(4-Methoxyphenyl)-N,N-dimethyl-4-oxo-3,4-dihydrophthalazine-1-carboxamide (CAS 338975-84-1), molecular formula C18H17N3O3 and molecular weight 323.35 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-(4-Methoxyphenyl)-N,N-dimethyl-4-oxo-3,4-dihydrophthalazine-1-carboxamide (C18H17N3O3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. 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 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.
Physical & Chemical Properties
| Molecular Formula | C18H17N3O3 |
| Molecular Weight | 323.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
Related Methoxyphenyl Standards
- 3-(2-Methoxyphenyl)-N-phenyl-2-(2H-1,2,3,4-tetrazol-5-yl)propanamide (CAS 483993-59-5)
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Recommended Standards
- 3-(6-(Piperidin-1-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)benzoic acid (CAS 821002-67-9)
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- 3-[(3-Cyanophenyl)methoxy]pyrido[1,2-a]indole-10-carbonitrile (CAS 338981-95-6)
- 2-Ethoxy-N-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzamide (CAS 899745-44-9)
- 4-((1S,2R)-3-(4-benzylpiperidin-1-yl)-1-hydroxy-2-methylpropyl)phenol (CAS 169274-81-1)
- 3-(Boc-amino)-4-(3-bromophenyl)butyric Acid (CAS 919988-44-6)
- Ethyl 2-((5-methyl-7-oxo-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)propanoate (CAS 891118-65-3)
- 4-(1-adamantyl)2-aminothiazole (CAS 19735-74-1)
- tert-Butyl (2-(hydroxy(pyridin-4-yl)methyl)phenyl)carbamate (CAS 280568-13-0)
- 1-(3-Chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)pyrrolidine (CAS 2096331-84-7)
- Aquilapharm A22953 (CAS 78196-92-6)
- 3-methyl-7-(trifluoromethyl)-1H-quinoxalin-2-one (CAS 166402-52-4)
- 3-(2,5-Dimethylphenyl)-2-mercapto-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3h)-one (CAS 380436-86-2)
- Myristoyl Pentapeptide -4 acetate (CAS 959610-30-1(free base))
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