Ethyl 6-ethyl-2-methyl-4-oxocyclohex-2-ene-1-carboxylate CAS 5421-90-9
| CAS No. | 5421-90-9 |
| Molecular Formula | C12H18O3 |
| Molecular Weight | 210.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Ethyl 6-ethyl-2-methyl-4-oxocyclohex-2-ene-1-carboxylate 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.
CATO supplies Ethyl 6-ethyl-2-methyl-4-oxocyclohex-2-ene-1-carboxylate (CAS 5421-90-9), a certified reference material (molecular formula C12H18O3, MW 210.27 g/mol) for analytical method development and quality control.
Structurally, Ethyl 6-ethyl-2-methyl-4-oxocyclohex-2-ene-1-carboxylate (C12H18O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 210.27 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C12H18O3 |
| Molecular Weight | 210.27 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Recommended Standards
- Ethyl 5,5-dimethyl-3-oxooct-7-ynoate (CAS 2557181-86-7)
- Ethyl 6-oxooctahydro-3aH-indene-3a-carboxylate (CAS 97180-66-0)
- Ethyl 5-(tert-butyl)-2-methylfuran-3-carboxylate (CAS 38453-94-0)
- Flavan (CAS 494-12-2)
- 2-(3-Amino-1h-pyrazol-1-yl)-N-ethylpropanamide (CAS 1179076-83-5)
- N1-Methylcyclohexane-1,4-diamine (CAS 38362-02-6)
- 3-[(2-chlorophenyl)formamido]propanoic acid (CAS 178497-08-0)
- 3-(2-Phenoxyethyl)pyrrolidine (CAS 1220035-53-9)
- Dapoxetine Impurity 96 (CAS CATO-C4X-143996)
- 2-((3,3-Dimethyl-2-oxobutyl)thio)-6-methyl-4-(trifluoromethyl)nicotinonitrile (CAS 625377-56-2)
- Ranitidine-D6 (CAS 1185514-83-3)
- 2-(5-((4-Chlorobenzyl)thio)-4-ethyl-4H-1,2,4-triazol-3-yl)thieno[2,3-b]quinoline (CAS 478260-37-6)
- 4-(3-Bromophenyl)-2-methylbutanal (CAS 1343924-24-2)
- Semaglutide impurity 78 (CAS CATO-C4X-222678)
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