(E)-4-(4-isopropylphenyl)-4-oxobut-2-enoic acid CAS 58897-58-8
| CAS No. | 58897-58-8 |
| Molecular Formula | C13H14O3 |
| Molecular Weight | 218.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(E)-4-(4-isopropylphenyl)-4-oxobut-2-enoic acid (CAS 58897-58-8), molecular formula C13H14O3 and molecular weight 218.25 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, (E)-4-(4-isopropylphenyl)-4-oxobut-2-enoic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 218.25 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C13H14O3 |
| Molecular Weight | 218.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
Related E Standards
- (E)-4-(4-Isopropylphenyl)-4-oxobut-2-enoic acid (CAS 29587-82-4)
- (R)-3-(4-Isopropylphenyl)piperazin-2-one (CAS 1228569-23-0)
- (S)-3-(4-Isopropylphenyl)piperazin-2-one (CAS 1228570-68-0)
- 3-(4-Isopropylphenyl)piperazin-2-one (CAS 1246548-99-1)
- 1-(4-Isopropylphenyl)cyclobutane-1-carboxylic acid (CAS 926187-55-5)
- 1-(4-isopropylphenyl)-1H-imidazole-2-thiol (CAS 358619-10-0)
- (1-(4-Isopropylphenyl)-2,2-dimethylcyclopropyl)methanol (CAS 1892645-09-8)
- 2-(4-Isopropylphenyl)cyclohexan-1-ol (CAS 197704-79-3)
Recommended Standards
- (E)-4-oxo-6-(p-tolyl)hex-5-enoic acid (CAS 866035-83-8)
- (E)-3-(4-Methoxyphenyl)-1-(2-methyloxiran-2-yl)prop-2-en-1-one (CAS 29808-43-3)
- (R)-2-Amino-3-(6-methyl-1H-indol-3-yl)propanoic acid (CAS 67008-97-3)
- (5-(1-Methylcyclopropoxy)-2H-indazol-2-yl)methanol (CAS 2168136-04-5)
- N-Allyl-4-oxo-3-propyl-2-thioxo-1,2,3,4-tetrahydroquinazoline-7-carboxamide (CAS 403727-68-4)
- (R)-3,3-difluoropropane-1,2-diol (CAS 1026908-13-3)
- tert-Butyl 3-nitroazetidine-1-carboxylate (CAS 1445951-55-2)
- 852043-38-0 08:0 PI(3,4,5)P3 (CAS 852043-38-0)
- 1-(5-Bromo-4-methylthiazol-2-yl)guanidine hydrobromide (CAS 1197238-35-9)
- 5-Chloro-4-(piperazin-1-yl)-N,N-dipropylpyridine-3-sulfonamide (CAS 1352531-32-8)
- Methotrexate Impurity 24 (CAS CATO-C4X-115424)
- 3-Butyl-7-chloro-3H-[1,2,3]triazolo[4,5-d]pyrimidin-5-amine (CAS 92307-09-0)
- 2-(4-Fluorophenyl)-4-methylthiazole-5-carboxylic acid (CAS 144060-99-1)
- Cyclolinopeptide B (CAS 193139-41-2)
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