2-Ethyl-1,3-dioxoisoindoline-5-carboxylic acid CAS 137247-85-9
| CAS No. | 137247-85-9 |
| Molecular Formula | C11H9NO4 |
| Molecular Weight | 219.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 2-Ethyl-1,3-dioxoisoindoline-5-carboxylic acid (C11H9NO4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 219.19 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies 2-Ethyl-1,3-dioxoisoindoline-5-carboxylic acid (CAS 137247-85-9), a certified reference material (molecular formula C11H9NO4, MW 219.19 g/mol) for analytical method development and quality control.
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), 2-Ethyl-1,3-dioxoisoindoline-5-carboxylic acid 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 | C11H9NO4 |
| Molecular Weight | 219.19 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 1 |
Related Ethyl Standards
- 1,3-Dioxoisoindoline-2-carbonyl chloride (CAS 5511-75-1)
- 1,3-Dioxoisoindoline-2-carbothioamide (CAS 112486-72-3)
- 2-Methyl-1,3-dioxoisoindoline-4-carboxylic acid (CAS 1707393-56-3)
- 2-Methyl-1,3-dioxoisoindoline-5-carboxylic acid (CAS 42710-39-4)
- Methyl 1,3-dioxoisoindoline-2-carboxylate (CAS 25543-10-6)
- 1,3-Dioxoisoindoline-4-carboxylic acid (CAS 776-22-7)
- 2-Methyl-1,3-dioxoisoindoline-5-carbonitrile (CAS 1784509-60-9)
- 1,3-Dioxoisoindoline-2-carbonitrile (CAS 63571-77-7)
Recommended Standards
- 5H-[1,3]Dioxolo[4,5-f]indole-6-carboxylic acid methyl ester (CAS 136818-52-5)
- 4-Fluoro-2-sulfamoylbenzoic acid (CAS 1379305-97-1)
- 5-(2,6-Difluorophenyl)-1-methyl-1h-pyrazole-3-carbonitrile (CAS 1361019-09-1)
- N-(4-hydroxy-2-oxo-2H-chromen-3-yl)acetamide (CAS 13948-45-3)
- 2-Iodo-6-(trifluoromethyl)benzonitrile (CAS 914637-37-9)
- 3-Methyl-1-(1,4,5,6-tetrahydro-2-pyrimidinyl)-1H-pyrazole-4,5-dione 4-(N-phenylhydrazone) (CAS 338402-59-8)
- 3-Bromo-5-(3-methyl-1,2,4-oxadiazol-5-yl)pyridine (CAS 1283108-13-3)
- 3-(Difluoromethyl)-7-hydroxy-2H-chromen-2-one (CAS 2102410-22-8)
- 3-(2-Methoxyethoxy)-1-methyl-1H-indazole-6-carbaldehyde (CAS 1986542-41-9)
- 31301-39-0 3-(4-Chlorophenyl)isoxazole DTXSID70449189 (CAS 31301-39-0)
- Laurocapram (CAS 59227-89-3)
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