(E)-5-Oxohex-2-enoic acid CAS 32794-09-5
| CAS No. | 32794-09-5 |
| Molecular Formula | C6H8O3 |
| Molecular Weight | 128.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (E)-5-Oxohex-2-enoic acid is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
(E)-5-Oxohex-2-enoic acid (CAS 32794-09-5), molecular formula C6H8O3 and molecular weight 128.13 g/mol, is a CATO reference standard with documented purity and traceability.
(E)-5-Oxohex-2-enoic acid (C6H8O3) contains a carboxylic acid 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 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).
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 | C6H8O3 |
| Molecular Weight | 128.13 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1966 |
Related E Standards
- (Z)-5-Oxohex-3-enoic acid (CAS 113219-94-6)
- (E)-5-oxohex-2-enoic acid (CAS 143228-86-8)
- 2-Oxohex-5-enoic acid (CAS 80003-58-3)
- Methyl 3-oxohex-5-enoate (CAS 100636-39-3)
- Methyl 2-oxohex-5-enoate (CAS 84012-01-1)
- Methyl 4-oxohex-5-enoate (CAS 23684-13-1)
- Methyl 5-oxohex-3-enoate (CAS 51051-66-2)
- (E)-4-Oxohex-2-enal (CAS 2492-43-5)
Recommended Standards
- (5S)-5-(Hydroxymethyl)-3-methylideneoxolan-2-one (CAS 216868-51-8)
- (R)-2-Amino-4-cyanobutanoic acid (CAS 69489-41-4)
- (5-Ethyl-1,2,4-oxadiazol-3-yl)methanol (CAS 915920-77-3)
- (R)-3-Amino-1-methylpyrrolidine-2,5-dione (CAS 220835-67-6)
- N-(3-(n-(1h-pyrazol-4-yl)sulfamoyl)phenyl)-2-(2-(tert-butyl)phenoxy)acetamide (CAS 1384744-19-7)
- 2-[4-(Dimethylamino)styryl]-3-methyl-3-benzothiazolium (CAS 16197-32-3)
- 5-Phenethyl-1,3,4-oxadiazol-2(3H)-one (CAS 34544-64-4)
- (S)-2-(4-bromobenzyl)-3-((tert-butoxycarbonyl)amino)propanoic acid (CAS 1260607-17-7)
- ((Bromodifluoromethyl)sulfonyl)benzene (CAS 80351-58-2)
- 4-Methoxy-3-(4-methylphenyl)propiophenone (CAS 106511-65-3)
- N'-(4,6-Dimethylbenzo[d]thiazol-2-yl)-2-phenoxyacetohydrazide (CAS 851987-45-6)
- N4,N4-Dimethyl-4,6-guinazolinediamine, (CAS 198961-77-2)
- 1-(3-Hydroxyphenyl)thiourea (CAS 3394-05-6)
- Human glucagon CRS (CAS 9007-92-5)
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