1,3-Dimethyl-5-ethylbenzene CAS 934-74-7
| CAS No. | 934-74-7 |
| Molecular Formula | C10H14 |
| Molecular Weight | 134.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1,3-Dimethyl-5-ethylbenzene is closely related to an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1,3-Dimethyl-5-ethylbenzene (CAS 934-74-7), molecular formula C10H14 and molecular weight 134.22 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 1,3-Dimethyl-5-ethylbenzene (C10H14) is characterized by 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 high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), 1,3-Dimethyl-5-ethylbenzene 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 | C10H14 |
| Molecular Weight | 134.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Dimethyl Standards
- 1,2-Dimethyl-3-ethylbenzene (CAS 933-98-2)
- 1,2-Dimethyl-4-ethylbenzene (CAS 934-80-5)
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Recommended Standards
- 1,3-Dithian-5-one (CAS 64211-37-6)
- 1,3-Dithiolane-2-carbaldehyde (CAS 89281-64-1)
- (-)-Verbenene (CAS 190715-28-7)
- 1,4-Dithian-2-one (CAS 74637-14-2)
- 4-fluoro-1-N-(2-phenoxyethyl)benzene-1,2-diamine (CAS 1272177-79-3)
- 3-(Aminomethyl)-3-oxetanol (CAS 1305208-47-2)
- Ethyl 3-nitroisonicotinate (CAS 1093759-40-0)
- 3-Hydroxy-5-isopropyl-2-(((4-(trifluoromethoxy)phenyl)imino)methyl)cyclohex-2-en-1-one (CAS 1024151-73-2)
- 3,4-Dichloro-N-(4-(((3-(trifluoromethyl)phenyl)thio)methyl)phenyl)benzamide (CAS 338398-65-5)
- [Phthalato(2-)]dioxotrilead (CAS 69011-06-9)
- 3-Bromo-2-chloro-5-nitro-6-picoline (CAS 856834-95-2)
- 5-Fluoro-6-(hydroxymethyl)-2H-benzo[b][1,4]oxazin-3(4H)-one (CAS 2883020-28-6)
- 2-(2,5-Dichlorophenoxy)-2-methylpropanoic acid (CAS 103905-84-6)
- Pheromone Biosynthesis Activating Neuropeptide (Helicoverpa assulta, Heliothis zea) (CAS 122071-54-9)
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