5-[2-(2,6-dioxo-3-piperidyl)-1-oxo-isoindolin-5-yl]pent-4-ynoic acid CAS 2762040-46-8
| CAS No. | 2762040-46-8 |
| Molecular Formula | C18H16N2O5 |
| Molecular Weight | 340.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-[2-(2,6-dioxo-3-piperidyl)-1-oxo-isoindolin-5-yl]pent-4-ynoic acid (CAS 2762040-46-8), molecular formula C18H16N2O5 and molecular weight 340.33 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C18H16N2O5, 5-[2-(2,6-dioxo-3-piperidyl)-1-oxo-isoindolin-5-yl]pent-4-ynoic acid contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 340.33 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.
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 | C18H16N2O5 |
| Molecular Weight | 340.33 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2003 |
| Nitrogen Atoms | 2 |
Related dioxo Standards
- 2-(2,6-dioxo-3-piperidyl)-4-(5-hydroxypent-1-ynyl)isoindoline-1,3-dione (CAS 2357113-34-7)
- 2-(2,6-dioxo-3-piperidyl)-4-pent-4-ynoxy-isoindoline-1,3-dione (CAS 2568279-75-2)
- 2-(2,6-dioxo-3-piperidyl)-5-(5-hydroxypent-1-ynyl)isoindoline-1,3-dione (CAS 2357113-47-2)
- 2-[3-[2-(2,6-dioxo-3-piperidyl)-1-oxo-isoindolin-5-yl]prop-2-ynoxy]acetaldehyde (CAS 2619512-42-2)
- 5-[2-(2,6-dioxo-3-piperidyl)-1-oxo-isoindolin-4-yl]pent-4-ynoic acid (CAS 2640724-25-8)
- 2,5-Dioxo-1,7-diphenyl-1,2,5,6,7,8-hexahydroquinoline-3-carbonitrile (CAS 62370-58-5)
- 2,4-Dioxo-1-(2-(3-(trifluoromethyl)phenoxy)ethoxy)-1,2,3,4-tetrahydropyrimidine-5-carbonitrile (CAS 339010-24-1)
- Ethyl 6-(1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)hexanoate (CAS 300815-53-6)
Recommended Standards
- 5'-Amino-3-nitro-[1,1':3',1''-terphenyl]-4',6'-dicarbonitrile (CAS 220125-80-4)
- 4-Nitrophenyl (tert-butoxycarbonyl)-L-threoninate (CAS 28307-08-6)
- 6-Methoxy-5-(4-methoxyphenoxy)-8-nitroquinoline (CAS 5452-59-5)
- 4-(Benzo[d][1,3]dioxol-5-yl)-2-methyl-5-oxo-5H-indeno[1,2-b]pyridine-3-carbonitrile (CAS 439108-77-7)
- 2,5-Dichloro-4-(difluoromethoxy)benzyl chloride (CAS 1806276-17-4)
- 4-Methoxy-7-methyl-1H-indole (CAS 203003-67-2)
- 3-Chloro-5,6,7,8-tetrahydroimidazo[1,5-a]pyrazine hydrochloride (CAS 2089315-28-4)
- 3-(3-Bromophenyl)-5-hydroxyisoxazole (CAS 1188158-52-2)
- 2-Iodo-3-methoxypyridine 1-oxide (CAS 115927-86-1)
- 7-Methylrosmanol (CAS 113085-62-4)
- 2-Amino-4-(6-bromobenzo[d][1,3]dioxol-5-yl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile (CAS 332177-07-8)
- Bis(oxiran-2-ylmethyl) terephthalate (CAS 7195-44-0)
- 4-(4-Bromo-1h-pyrazol-1-yl)benzonitrile (CAS 1184544-36-2)
- Acetyl Hexapeptide-38 (CAS 1400634-44-7)
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