2,2,4-Trimethyl-8-(6-methyl-7-oxo-6,7-dihydro-1H-pyrrolo[2,3-c]pyridin-4-yl)-6-(methylsulfonyl)-2H-benzo[b][1,4]oxazin-3(4H)-one CAS 1820889-23-3
| CAS No. | 1820889-23-3 |
| Molecular Formula | C20H21N3O5S |
| Molecular Weight | 415.46 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 2,2,4-Trimethyl-8-(6-methyl-7-oxo-6,7-dihydro-1H-pyrrolo[2,3-c]pyridin-4-yl)-6-(methylsulfonyl)-2H-benzo[b][1,4]oxazin-3(4H)-one (CAS 1820889-23-3), a certified reference material (molecular formula C20H21N3O5S, MW 415.46 g/mol) for analytical method development and quality control.
2,2,4-Trimethyl-8-(6-methyl-7-oxo-6,7-dihydro-1H-pyrrolo[2,3-c]pyridin-4-yl)-6-(methylsulfonyl)-2H-benzo[b][1,4]oxazin-3(4H)-one (C20H21N3O5S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C20H21N3O5S |
| Molecular Weight | 415.46 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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.) | 1995 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- (S)-4-(Oxiran-2-yl)-2,3-dihydrobenzofuran, 97% (CAS 252577-77-8)
- 3-(3,4-Dimethylphenyl)-2-thioxo-4-imidazolidinone (CAS 568552-79-4)
- Diazoxide (CAS 364-98-7)
- 4-Chloro-5-nitronicotinonitrile (CAS 1707581-29-0)
- 3-(5-Chloro-2-methoxyphenyl)-2-mercapto-7-methyl-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3h)-one (CAS 721418-55-9)
- 951886-20-7 3-(5-(1,3-Dioxolan-2-yl)-2-thienyl)-1-propene MFCD09801342 (CAS 951886-20-7)
- 2-((2-Amino-7-methyl-6,7-dihydrothieno[3,2-d]pyrimidin-4-yl)amino)ethanol (CAS 802553-44-2)
- 7-exo-tert-Butyl 7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate (CAS 652148-14-6)
- N-Methoxy-N-methylformamide (CAS 32117-82-1)
- D-Ser12-Semaglutide (CAS CATO-C4X-2226240)
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