2-{4-[(E)-(4-Bromophenyl)methylidene]-3-oxo-2-pentylcyclopentyl}acetic acid CAS 866042-96-8
| CAS No. | 866042-96-8 |
| Molecular Formula | C19H23BrO3 |
| Molecular Weight | 379.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 2-{4-[(E)-(4-Bromophenyl)methylidene]-3-oxo-2-pentylcyclopentyl}acetic acid (C19H23BrO3) is characterized by a steroid core, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
2-{4-[(E)-(4-Bromophenyl)methylidene]-3-oxo-2-pentylcyclopentyl}acetic acid (CAS 866042-96-8) is a high-purity analytical reference standard with the molecular formula C19H23BrO3 and a molecular weight of 379.29 g/mol.
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 | C19H23BrO3 |
| Molecular Weight | 379.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
Related E Standards
- 2-(4-Bromophenyl)-1-(3-hydroxypropyl)-5,6,7,8-tetrahydroquinazoline-4(1H)-thione (CAS 618396-47-7)
- 2-(2-(4-Bromophenyl)-4-thioxo-5,6,7,8-tetrahydroquinazolin-1(4H)-yl)acetic acid (CAS 620590-18-3)
- 4-(4-Bromophenyl)-2-[(4-methylphenyl)sulfanyl]-4-oxobutanoic acid (CAS 868255-45-2)
- 4-(4-Bromophenyl)-4-oxo-2-(m-tolylthio)butanoic acid (CAS 306730-24-5)
- 5-Benzyl-1-(4-bromophenyl)-1,3-dihydro-2H-benzo[d]imidazol-2-one (CAS 1272756-39-4)
- N-(4-Bromophenyl)-5-methyl-3-phenylpyrazolo[1,5-a]pyrimidin-7-amine (CAS 877798-89-5)
- Methyl ((4-bromophenyl)sulfonyl)glycylalaninate (CAS 1396971-36-0)
- Methyl 4-(4-bromophenyl)-2-(2-cyanoacetamido)thiophene-3-carboxylate (CAS 545385-40-8)
Recommended Standards
- 1858256-79-7 tert-Butyl 8-bromo-5-ethyl-1,3,4,5-tetrahydro-2H-pyrido[4,3-b]indole-2-carboxylate MFCD29034973 (CAS 1858256-79-7)
- 2-Bromo-N-(4-(methylthio)benzo[d]thiazol-2-yl)benzamide (CAS 941877-83-4)
- 6-thioguanosine-5'-monophosphate (CAS 15867-02-4)
- 3-(4-Bromo[1,1-biphenyl]-4-yl)-1,2,3,4-tetrahydro-1-naphthalenol (CAS 56181-82-9)
- 3-Ethylthiophenol (CAS 62154-77-2)
- 3-Methyl-2-oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylic acid (CAS 103039-19-6)
- Ethyl 1-(4-bromobenzyl)-5-methyl-1H-1,2,3-triazole-4-carboxylate (CAS 852180-99-5)
- Guvacine hydrochloride (CAS 6027-91-4)
- 2-(naphthalen-1-yl)cyclopropane-1-carboxylic acid (CAS 92254-07-4)
- Indacaterol Impurity 39 (CAS CATO-C4X-150039)
- 1-(p-Tolyl)azetidin-2-one (CAS 38560-27-9)
- Acetyltrimethylsilane (CAS 13411-48-8)
- 3-[(4-Bromo-2-chlorophenoxy)methyl]pyrrolidinehydrochloride (CAS 1219949-19-5)
- Semaglutide impurity 75 (CAS CATO-C4X-222675)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com