6-(4-Oxo-3-(m-tolyl)-3,4-dihydrophthalazin-1-yl)-2H-benzo[b][1,4]oxazin-3(4H)-one CAS 861209-38-3
| CAS No. | 861209-38-3 |
| Molecular Formula | C23H17N3O3 |
| Molecular Weight | 383.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 6-(4-Oxo-3-(m-tolyl)-3,4-dihydrophthalazin-1-yl)-2H-benzo[b][1,4]oxazin-3(4H)-one (CAS 861209-38-3), a certified reference material (molecular formula C23H17N3O3, MW 383.40 g/mol) for analytical method development and quality control.
Structurally, 6-(4-Oxo-3-(m-tolyl)-3,4-dihydrophthalazin-1-yl)-2H-benzo[b][1,4]oxazin-3(4H)-one (C23H17N3O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 17.0, corresponding to approximately 17 ring(s) or double-bond equivalent(s). With a molecular weight of 383.40 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.
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 | C23H17N3O3 |
| Molecular Weight | 383.40 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
Recommended Standards
- 5-(4-Amino-1-(2,2-diethoxyethyl)-1H-pyrazolo[3,4-d]pyrimidin-3-yl)benzo[d]oxazol-2-amine (CAS 2001571-40-8)
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- Semaglutide impurity 101 (CAS CATO-C4X-2226101)
Why CATO?
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