838-57-3 Acetic acid, (p-nitrobenzoyl)-, ethyl ester Benzenepropanoic acid, 4-nitro-beta-oxo-, ethyl ester Ethyl 4-nitrobenzoylacetate 4-10-00-02759 (Beilstein Handbook Reference) BRN 1124763 EINECS 212-656-7 Ethyl (p-nitrobenzoyl)acetate Ethyl (4-nitrobenzoyl)acetate Ethyl 4-nitro-beta-oxobenzenepropanoate (p-Nitrobenzoyl)acetic acid ethyl ester (4-Nitrobenzoyl)acetic acid ethyl ester NSC 62134 CAS 838-57-3
| CAS No. | 838-57-3 |
| Molecular Formula | C11H11NO5 |
| Molecular Weight | 237.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 237.21 g/mol gives 838-57-3 Acetic acid, (p-nitrobenzoyl)-, ethyl ester Benzenepropanoic acid, 4-nitro-beta-oxo-, ethyl ester Ethyl 4-nitrobenzoylacetate 4-10-00-02759 (Beilstein Handbook Reference) BRN 1124763 EINECS 212-656-7 Ethyl (p-nitrobenzoyl)acetate Ethyl (4-nitrobenzoyl)acetate Ethyl 4-nitro-beta-oxobenzenepropanoate (p-Nitrobenzoyl)acetic acid ethyl ester (4-Nitrobenzoyl)acetic acid ethyl ester NSC 62134 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
838-57-3 Acetic acid, (p-nitrobenzoyl)-, ethyl ester Benzenepropanoic acid, 4-nitro-beta-oxo-, ethyl ester Ethyl 4-nitrobenzoylacetate 4-10-00-02759 (Beilstein Handbook Reference) BRN 1124763 EINECS 212-656-7 Ethyl (p-nitrobenzoyl)acetate Ethyl (4-nitrobenzoyl)acetate Ethyl 4-nitro-beta-oxobenzenepropanoate (p-Nitrobenzoyl)acetic acid ethyl ester (4-Nitrobenzoyl)acetic acid ethyl ester NSC 62134 (CAS 838-57-3) is a high-purity analytical reference standard with the molecular formula C11H11NO5 and a molecular weight of 237.21 g/mol.
Based on its molecular formula C11H11NO5, 838-57-3 Acetic acid, (p-nitrobenzoyl)-, ethyl ester Benzenepropanoic acid, 4-nitro-beta-oxo-, ethyl ester Ethyl 4-nitrobenzoylacetate 4-10-00-02759 (Beilstein Handbook Reference) BRN 1124763 EINECS 212-656-7 Ethyl (p-nitrobenzoyl)acetate Ethyl (4-nitrobenzoyl)acetate Ethyl 4-nitro-beta-oxobenzenepropanoate (p-Nitrobenzoyl)acetic acid ethyl ester (4-Nitrobenzoyl)acetic acid ethyl ester NSC 62134 contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 237.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), 838-57-3 Acetic acid, (p-nitrobenzoyl)-, ethyl ester Benzenepropanoic acid, 4-nitro-beta-oxo-, ethyl ester Ethyl 4-nitrobenzoylacetate 4-10-00-02759 (Beilstein Handbook Reference) BRN 1124763 EINECS 212-656-7 Ethyl (p-nitrobenzoyl)acetate Ethyl (4-nitrobenzoyl)acetate Ethyl 4-nitro-beta-oxobenzenepropanoate (p-Nitrobenzoyl)acetic acid ethyl ester (4-Nitrobenzoyl)acetic acid ethyl ester NSC 62134 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 | C11H11NO5 |
| Molecular Weight | 237.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
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Recommended Standards
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- CAS 200709-36-0 (CAS 200709-36-0)
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- 1-Methyl-5-oxo-2-(p-tolyl)-1,2,3,5-tetrahydroimidazo[1,2-a]pyrimidine-6-carboxylic acid (CAS 141234-28-8)
- 2-(3-(Benzyl(isopropyl)amino)pyrrolidin-1-yl)acetic acid (CAS 1353964-22-3)
- 5-(Difluoromethyl)-4-nitro-6-oxo-1,6-dihydropyridine-3-carboxamide (CAS 1805491-78-4)
- 3-ethynyl-3-fluoro-piperidine;hydrochloride (CAS 2306263-18-1)
- Tris[1-(3,5-diisopropylbiphenyl)-2-phenylimidazole]iridium (CAS 1272505-63-1)
- (3-(Trifluoromethyl)isoxazol-4-yl)methanamine (CAS 1492412-95-9)
- (S)-5-(4-Nitrophenyl)-2-(pyrrolidin-2-yl)-1H-imidazole dihydrochloride (CAS 1439921-98-8)
- (S)-4-benzyl-3-(2-methoxyacetyl)oxazolidin-2-one (CAS 129952-14-3)
- Insulin Degludec Impurity 26 (CAS CATO-C4X-215726)
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