rac Mono(2-Ethyl-5-Oxohexyl) Phthalate CAS 40321-98-0
| CAS No. | 40321-98-0 |
| Molecular Formula | C16H20O5 |
| Molecular Weight | 292.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
rac Mono(2-Ethyl-5-Oxohexyl) Phthalate (CAS 40321-98-0), molecular formula C16H20O5 and molecular weight 292.33 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C16H20O5, rac Mono(2-Ethyl-5-Oxohexyl) Phthalate contains a flavonoid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 292.33 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C16H20O5 |
| Molecular Weight | 292.33 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
Related rac Standards
- Mono-2-(1-oxoethyl)hexyl Phthalate (CAS 88144-82-5)
- rac Mono(3,5,5-trimethylhexyl) Phthalate (CAS 297182-83-3)
- Mono(4- carboxy- 2- ethylbutyl) Phthalate (CAS 82975-92-6)
- Mono(2- (1- hydroxyethyl) hexyl) Phthalate (CAS 88144-76-7)
- Mono(2- (2- hydroxyethyl) hexyl) Phthalate (CAS 82975-94-8)
- Mono(2-ethyl-6-hydroxyhexyl) Phthalate (CAS 82975-96-0)
- Mono(2-Ethyl-5-Hydroxyhexyl) Phthalate (CAS 40321-99-1)
- rac Mono(2-ethyl-5-oxohexyl) Phthalate-d4 (CAS 679789-44-7)
Recommended Standards
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- Solvent red 3 (CAS 6535-42-8)
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- 5-(2-Nitro-4-(trifluoromethyl)phenyl)-2H-tetrazole (CAS 1192263-79-8)
- Methyl 1-aminocycloheptanecarboxylate hydrochloride (CAS 92398-50-0)
- 3-[2-(1-Acetyl-pyrrolidin-2-yl)-6-methyl-pyridin-4-yl]-propionic acid (CAS 1316220-79-7)
- Benzilic-d10 Acid (rings-d10) (CAS 1219799-12-8)
- Lurasidone Impurity N1 (CAS 1318074-20-2)
- 5-(2-Chloro-4-fluorophenoxymethyl)thiophene-2-carboxylic acid (CAS 934127-20-5)
- 2-(4-Methoxyphenyl)thiomorpholinehydrochloride (CAS 1171237-79-8)
- tert-Butyl (4-chlorothiazol-2-yl)carbamate (CAS 1373223-09-6)
- Custom peptides (CAS CATO-CPTD788509)
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