(2E,4E)-5-(3-Methoxyphenyl)penta-2,4-dienoic acid CAS 135754-94-8
| CAS No. | 135754-94-8 |
| Molecular Formula | C12H12O3 |
| Molecular Weight | 204.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), (2E,4E)-5-(3-Methoxyphenyl)penta-2,4-dienoic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
(2E,4E)-5-(3-Methoxyphenyl)penta-2,4-dienoic acid (CAS 135754-94-8), molecular formula C12H12O3 and molecular weight 204.22 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H12O3, (2E,4E)-5-(3-Methoxyphenyl)penta-2,4-dienoic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 204.22 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).
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.
Physical & Chemical Properties
| Molecular Formula | C12H12O3 |
| Molecular Weight | 204.22 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.) | 1995 |
Recommended Standards
- 6,7-Dimethoxynaphthalen-1-ol (CAS 135678-71-6)
- 2,4-Difluoro-4'-methyl-1,1'-biphenyl (CAS 1358983-25-1)
- 2-Ethyl-4h-chromene-3-carboxylic acid (CAS 1354949-38-4)
- Benzyl 5-hydroxypent-2-ynoate (CAS 136258-78-1)
- 4-Iodo-3,4,5-trifluorobenzophenone (CAS 951888-51-0)
- 5-Bromo-2-(4-ethoxyphenoxy)aniline (CAS 946786-83-0)
- 4-(Methylthio)-N-(4-nitrobenzylidene)-2-(4-nitrophenyl)oxazol-5-amine (CAS 31666-15-6)
- Ethyl 2-(3-pyrrolidinyloxy)benzoate hydrochloride (CAS 1220032-96-1)
- 2-Butenedioic acid (2Z)-, 1,4-diethyl ester, polymer with chloroethene and ethenyl acetate (CAS 65072-38-0)
- N-(3-(trifluoromethoxy)benzyl)propan-2-amine (CAS 1343470-04-1)
- (1-(4-Nitrophenyl)piperidin-3-yl)methanol (CAS 166438-83-1)
- Diethyl 2-(bromomethyl)terephthalate (CAS 96259-69-7)
- 8-Chloro-2,3-dihydro-1,4-benzodioxine-6-carbonitrile (CAS 852389-10-7)
- [a-Glu](Side chain transposition)- Semaglutide (CAS CATO-C4X-2226111)
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