Ethyl 2-amino-4-(2-chloro-5-nitrophenyl)-6-(hydroxymethyl)-8-oxo-4H,8H-pyrano[3,2-b]pyran-3-carboxylate CAS 674804-97-8
| CAS No. | 674804-97-8 |
| Molecular Formula | C18H15ClN2O8 |
| Molecular Weight | 422.77 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C18H15ClN2O8, Ethyl 2-amino-4-(2-chloro-5-nitrophenyl)-6-(hydroxymethyl)-8-oxo-4H,8H-pyrano[3,2-b]pyran-3-carboxylate contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 422.77 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Ethyl 2-amino-4-(2-chloro-5-nitrophenyl)-6-(hydroxymethyl)-8-oxo-4H,8H-pyrano[3,2-b]pyran-3-carboxylate (CAS 674804-97-8) is a high-purity analytical reference standard with the molecular formula C18H15ClN2O8 and a molecular weight of 422.77 g/mol.
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.
As a certified reference material (CRM), Ethyl 2-amino-4-(2-chloro-5-nitrophenyl)-6-(hydroxymethyl)-8-oxo-4H,8H-pyrano[3,2-b]pyran-3-carboxylate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C18H15ClN2O8 |
| Molecular Weight | 422.77 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Ethyl Standards
- Ethyl 2-amino-4-(3-chloro-4-nitrophenyl)-6-(hydroxymethyl)-8-oxo-4H,8H-pyrano[3,2-b]pyran-3-carboxylate (CAS 939889-02-8)
- 4-Amino-2-[(4-chlorophenyl)amino]-5-(2,4-dichlorobenzoyl)thiophene-3-carbonitrile (CAS 338966-43-1)
- 4-Amino-2-(hexadecylthio)-6-(methylthio)pyrimidine-5-carbonitrile (CAS 922526-97-4)
- 6-Amino-4-(4-((2-chlorobenzyl)oxy)-3-methoxyphenyl)-3-methyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile (CAS 337499-07-7)
- 3-Amino-4-chloro-N-(2-iodo-5-methylphenyl)benzene-1-sulfonamide (CAS 554405-05-9)
- 2-Amino-1-((3-chlorobenzylidene)amino)-N-(2-methoxyethyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxamide (CAS 836625-75-3)
- Ethyl 4-{5-amino-7-thia-1,9-diazatetracyclo[9.2.2.0^{2,10}.0^{4,8}]pentadeca-2(10),3,5,8-tetraene-6-amido}benzoate (CAS 728003-27-8)
- Ethyl 6-amino-5-cyano-4-(4-methoxyphenyl)-2-((phenylthio)methyl)-4H-pyran-3-carboxylate (CAS 478079-20-8)
Recommended Standards
- 2,2-Bis(4-Fluorophenyl)-1,1,1-Trifluoroethane (CAS 789-03-7)
- 2-Nonacosanone (CAS 17600-99-6)
- 1-(4-Chlorobenzyl)-6-oxo-N-(4-(trifluoromethoxy)phenyl)-1,6-dihydropyridine-3-carboxamide (CAS 338783-27-0)
- 3,5-Dichloro-N-(4-(((4-chlorophenyl)thio)methyl)phenyl)benzamide (CAS 321431-92-9)
- N-(2,4-dichloro-5-(2-methoxyethoxy)phenyl)-3-(4-nitrophenoxy)thiophene-2-carboxamide (CAS 339015-29-1)
- Tert-butyln-[5-(trifluoromethyl)-3-piperidyl]carbamate (CAS 1405128-48-4)
- Ethyl 3,4-difluorobenzimidate hydrochloride (CAS 1205638-72-7)
- 4-METHYL-3-(HYDROXYMETHYL)MORPHOLINE HCL (CAS 1956379-95-5)
- (4-Chloro-2-(1-oxo-1,3,4,6,7,8,9,10-octahydro-2H-cyclohepta[4,5]pyrrolo[1,2-a]pyrazin-2-yl)pyridin-3-yl)methyl acetate (CAS 2387599-99-5)
- 34415-10-6 4-Pyrimidinecarboxylic acid, 1,6-dihydro-2-methyl-6-oxo- (9CI) 4-Pyrimidinecarboxylic acid, 6-hydroxy-2-methyl- 2-Methylorotic acid NSC 58348 (CAS 34415-10-6)
- 2-(4-Phenyl-1h-1,2,3-triazol-1-yl)acetic acid (CAS 51720-20-8)
- (R)-1-(3-ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethanamine (R)-2-acetamido-4-methylpentanoate (CAS 608142-28-5)
- Fluoxetine EP Impurity B (CAS 23580-89-4)
- Fibrinopeptide A, human TFA (CAS 61533-47-9)
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