(E)-Caffeic acid n-butyl ester CAS 136944-10-0
| CAS No. | 136944-10-0 |
| Molecular Formula | C13H16O4 |
| Molecular Weight | 236.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(E)-Caffeic acid n-butyl ester (CAS 136944-10-0), molecular formula C13H16O4 and molecular weight 236.26 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of (E)-Caffeic acid n-butyl ester (C13H16O4) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures (E)-Caffeic acid n-butyl ester under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C13H16O4 |
| Molecular Weight | 236.26 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
Related E Standards
- (E)-Caffeic acid t-butyl ester (CAS 845883-04-7)
- (E)-Caffeic acid propyl ester (CAS 142234-81-9)
- (E)-Caffeic acid isopropyl ester (CAS 845883-03-6)
- (E)-Caffeic acid n-pentyl ester (CAS 136944-11-1)
- Caffeic Acid 4-Sulfate (CAS 151481-51-5)
- (E)-Caffeic acid n-hexyl ester (CAS 142234-82-0)
- Caffeic Acid Benzyl Ester (CAS 107843-77-6)
- Caffeic Acid Benzyl Ester-d5 (CAS 1331655-92-5)
Recommended Standards
- Ethyl 2-(4-methoxy-2,6-dimethylphenyl)-2-oxoacetate (CAS 1368223-20-4)
- 3-(3,4-Diethoxyphenyl)acrylic acid (CAS 137013-00-4)
- Ethyl 2-(4-ethoxy-2-methylphenyl)-2-oxoacetate (CAS 1368196-72-8)
- Ethyl 2-(2-isopropoxyphenyl)-2-oxoacetate (CAS 1373519-34-6)
- 2-Methylbenzo[b]thiophen-3-amine (CAS 1821418-19-2)
- (S)-2-Amino-N-((2,3-dihydrobenzo[b][1,4]dioxin-6-yl)methyl)-N-isopropylpropanamide (CAS 1354008-07-3)
- 2-(3-(Dimethylamino)phenyl)pentan-2-ol (CAS 1443302-77-9)
- 4,4-Bis(methoxymethyl)piperidine (CAS 1084976-73-7)
- 2-cyclopropyl-3-hydrazinylpyrazine (CAS 1566279-41-1)
- 6-Bromo-N-ethylpyridin-2-amine (CAS 724770-74-5)
- 2-{2,4-dioxo-1,3-diazaspiro[4.4]nonan-3-yl}ethane-1-sulfonyl fluoride (CAS 885527-09-3)
- 3-methylazepane (CAS 6888-82-0)
- NI-57 (CAS 1883548-89-7)
- Liraglutide Impurity 13 TFA Salt (CAS CATO-C4X-199213)
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