2-Methoxyethyl 2-amino-4-(3,4-dichlorophenyl)-6-(hydroxymethyl)-8-oxo-4,8-dihydropyrano[3,2-b]pyran-3-carboxylate CAS 904262-23-3
| CAS No. | 904262-23-3 |
| Molecular Formula | C19H17Cl2NO7 |
| Molecular Weight | 442.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 2-Methoxyethyl 2-amino-4-(3,4-dichlorophenyl)-6-(hydroxymethyl)-8-oxo-4,8-dihydropyrano[3,2-b]pyran-3-carboxylate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
2-Methoxyethyl 2-amino-4-(3,4-dichlorophenyl)-6-(hydroxymethyl)-8-oxo-4,8-dihydropyrano[3,2-b]pyran-3-carboxylate (CAS 904262-23-3), molecular formula C19H17Cl2NO7 and molecular weight 442.25 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2-Methoxyethyl 2-amino-4-(3,4-dichlorophenyl)-6-(hydroxymethyl)-8-oxo-4,8-dihydropyrano[3,2-b]pyran-3-carboxylate (C19H17Cl2NO7) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C19H17Cl2NO7 |
| Molecular Weight | 442.25 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Methoxyethyl Standards
- 2-Methoxyethyl 2-amino-4-(2,3-dichlorophenyl)-6-(hydroxymethyl)-8-oxo-4,8-dihydropyrano[3,2-b]pyran-3-carboxylate (CAS 902304-37-4)
- N-(3-(2-Methoxyethyl)-6-(methylsulfonyl)benzo[d]thiazol-2(3H)-ylidene)quinoxaline-2-carboxamide (CAS 1173456-87-5)
- 2-Methoxyethyl 2-benzylidene-7-methyl-3-oxo-5-(thiophen-2-yl)-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate (CAS 617698-63-2)
- N-(3-(2-Methoxyethyl)-6-(methylsulfonyl)benzo[d]thiazol-2(3H)-ylidene)-2,3-dihydrobenzo[b][1,4]dioxine-6-carboxamide (CAS 864977-28-6)
- 7-(4-(2-((2-Methoxyethyl)amino)ethoxy)phenyl)-5-(3-methoxyphenyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine (CAS 497152-38-2)
- 2-Methoxyethyl 2-amino-6-(hydroxymethyl)-4-[4-(methoxycarbonyl)phenyl]-8-oxo-4H,8H-pyrano[3,2-b]pyran-3-carboxylate (CAS 902021-89-0)
- 8-((6-((2-Methoxyethyl)carbamoyl)pyridin-3-yl)oxy)-4,5-dihydrothieno[3',4':3,4]benzo[1,2-d]isothiazole-6-carboxamide (CAS 1818427-07-4)
- 2-Methoxyethyl 7-methyl-2-(4-methylbenzylidene)-3-oxo-5-(thiophen-2-yl)-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate (CAS 618072-26-7)
Recommended Standards
- Diethyl 6-amino-1-(2,4-dichlorobenzamido)-2-oxo-1,2-dihydropyridine-3,5-dicarboxylate (CAS 338794-90-4)
- 2-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)thio)-7-(4-chlorophenyl)-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 251096-58-9)
- N-(2-(2,4-Dichlorophenyl)benzo[d]oxazol-5-yl)-3-methyl-4-nitrobenzamide (CAS 313667-76-4)
- 1-(5-(Benzyloxy)-2,4-dichlorophenyl)-5-(4-nitrophenyl)-1H-tetrazole (CAS 338961-49-2)
- 8-Nitroquinolin-3-ol (CAS 25369-37-3)
- Isoquinolin-7-yldimethylphosphine oxide (CAS 2741265-19-8)
- 1,3-Bis(3-methoxyphenyl)thiourea (CAS 6601-00-9)
- 1-(3,5,5,8,8-Pentamethyl-5,6,7,8-tetrahydronaphthalen-2-yl)ethan-1-ol (CAS 156692-01-2)
- Arformoterol Impurity 29 (CAS 143687-23-4)
- 5-Bromo-2-fluoro-3-methoxybenzoic acid (CAS 1782260-95-0)
- (4-Chloro-benzyl)-(2-trifluoromethoxy-ethyl)-amine (CAS 1208079-03-1)
- (6,6-Dimethyl-1,4-dioxan-2-yl)methanamine hydrochloride (CAS 1311254-42-8)
- 4-Cyanophenylhydrazine Hydrochloride (CAS 2863-98-1)
- Semaglutide Impurity 165 (CAS CATO-C4X-2226165)
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