Ethyl 4-nitro-1,3-dioxoisoindoline-2-carboxylate CAS 190910-88-4
| CAS No. | 190910-88-4 |
| Molecular Formula | C11H8N2O6 |
| Molecular Weight | 264.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 4-nitro-1,3-dioxoisoindoline-2-carboxylate (CAS 190910-88-4), molecular formula C11H8N2O6 and molecular weight 264.19 g/mol, is a CATO reference standard with documented purity and traceability.
Ethyl 4-nitro-1,3-dioxoisoindoline-2-carboxylate (C11H8N2O6) contains an amino-acid-derived structure, an amide 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. 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 | C11H8N2O6 |
| Molecular Weight | 264.19 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 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2011 |
| Nitrogen Atoms | 2 |
Related Ethyl Standards
- 3-Methyl-4-nitro-1-(4-nitrophenyl)-1h-pyrazol-5-ol (CAS 132-42-3)
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Recommended Standards
- 2-Methyl-4-methylthiophenylboronic acid pinacol ester (CAS 1899905-99-7)
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- 2-(4-(Ethylthio)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1787235-77-1)
- (E)-N-(3-(2-(5-Nitrofuran-2-yl)vinyl)-1,2,4-oxadiazol-5-yl)acetamide (CAS 34457-18-6)
- [(2,2,2-Trifluoroethyl)thio]-benzene (CAS 2262-07-9)
- 5-(4-Fluorophenyl)-3-nitropyridin-2-amine (CAS 640271-51-8)
- 5-(4-Chlorophenyl)-4-ethyl-4H-1,2,4-triazol-3-yl hydrosulfide (CAS 26131-64-6)
- 4,4-Dimethyl-pyrrolidine-2-carboxylic acid ethyl ester tosylate (CAS 1965308-73-9)
- Dodecylamine Hydroiodide (CAS 34099-97-3)
- 3-Isopropylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 1707361-67-8)
- 4-(2,4,5-Trimethoxyphenyl)butan-2-ol (CAS 1491384-31-6)
- 2,3-Dibromo-1,1-diethoxypropane (CAS 10160-86-8)
- (1S,2S)-(+)-[1,2-Cyclohexanediamino-N,N'-bis(3,5-di-t-butylsalicylidene)]aluminum(III) chloride 307926-51-8 (S,S)-N,N'-BIS(3,5-DI-TERT-BUTYLSALICYLIDENE)-1,2-CYCLOHEXANEDIAMINOALUMINUM CHLORIDE;(S,S)-N,N'-BIS(3,5-DI-TERT-BUTYLSALICYLIDENE)-1,2-CYCLOHEXANEDIAMINOALUMINUM(III) CHLORIDE;(1S,2S)-(+)-[1,2-Cyclohexanediamino-N,N'-bis(3,5-di-t-butylsalicylidene)]aluminum(III) chloride SC10791 (CAS 307926-51-8)
- Semaglutide (CAS 910463-68-2（free base）)
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