(1Z,4E)-5-[4-(Diethoxymethyl)phenyl]-1-(dimethylamino)penta-1,4-dien-3-one CAS 303995-68-8
| CAS No. | 303995-68-8 |
| Molecular Formula | C18H25NO3 |
| Molecular Weight | 303.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(1Z,4E)-5-[4-(Diethoxymethyl)phenyl]-1-(dimethylamino)penta-1,4-dien-3-one (CAS 303995-68-8) is a high-purity analytical reference standard with the molecular formula C18H25NO3 and a molecular weight of 303.40 g/mol.
(1Z,4E)-5-[4-(Diethoxymethyl)phenyl]-1-(dimethylamino)penta-1,4-dien-3-one (C18H25NO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), (1Z,4E)-5-[4-(Diethoxymethyl)phenyl]-1-(dimethylamino)penta-1,4-dien-3-one 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.
Physical & Chemical Properties
| Molecular Formula | C18H25NO3 |
| Molecular Weight | 303.40 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 |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
Recommended Standards
- tert-butyl 3-(5,6,7,8-tetrahydro-1,8-naphthyridin-2-yl)pyrrolidine-1-carboxylate (CAS 1955518-11-2)
- (2-Aminophenyl)di-o-tolylmethanol (CAS 94964-71-3)
- 8-Hydroxy-4,10-dithia-1-azatetracyclo[9.7.0.0^{3,7}.0^{12,17}]octadeca-3(7),5,12(17),13,15-pentaen-18-one (CAS 190912-36-8)
- (2-Aminophenyl)di-p-tolylmethanol (CAS 91148-61-7)
- JX-401 (CAS 349087-34-9)
- 4-(Chloromethyl)-2-(3-methoxyphenyl)-5-methyloxazole (CAS 755030-85-4)
- Barium niobium oxide, 99.9% (metals basis) (CAS 12009-14-2)
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- 2-(4-Methylbenzoyl)-6-methylpyridine (CAS 1164200-12-7)
- 3-Iodopropane-1,2-diol (CAS 554-10-9)
- Methyl 3-amino-4-iodobenzo[b]thiophene-2-carboxylate (CAS 1603418-67-2)
- N1-Hexadecyl-1,3-propanediamine (CAS 7173-60-6)
- 5-(4-Aminophenoxy)-2-(2-fluorophenyl)isoindoline-1,3-dione (CAS 310451-98-0)
- Des-Asp15-Tirzepatide (CAS CATO-CPTD788958)
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