1-(2,5-Dimethylphenyl)butane-1,3-dione CAS 56290-55-2
| CAS No. | 56290-55-2 |
| Molecular Formula | C12H14O2 |
| Molecular Weight | 190.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 1-(2,5-Dimethylphenyl)butane-1,3-dione (C12H14O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 190.24 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO supplies 1-(2,5-Dimethylphenyl)butane-1,3-dione (CAS 56290-55-2), a certified reference material (molecular formula C12H14O2, MW 190.24 g/mol) for analytical method development and quality control.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C12H14O2 |
| Molecular Weight | 190.24 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
Related Dimethylphenyl Standards
- 1-(3,5-Dimethylphenyl)butane-1,3-dione (CAS 1020038-85-0)
- 1-(2,4-Dimethylphenyl)imidazolidin-2-one (CAS 1092346-55-8)
- 2-(2,4-Dimethylphenyl)cyclopropane-1-carboxylic acid (CAS 1157561-78-8)
- 2-(2,3-Dimethylphenyl)cyclopropane-1-carboxylic acid (CAS 1247569-13-6)
- 1-(2,5-Dimethylphenyl)cyclopropane-1-carboxylic acid (CAS 1260676-68-3)
- (Z)-4-((2,4-Dimethylphenyl)amino)-4-oxobut-2-enoic acid (CAS 7253-68-1)
- 1-(2,4-Dimethylphenyl)butane-1,3-dione (CAS 56290-42-7)
- 1-(3,4-Dimethylphenyl)butane-1,3-dione (CAS 51439-56-6)
Recommended Standards
- 1-(2-Amino-4-methylphenyl)pyrrolidin-2-one (CAS 69131-72-2)
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- Ethyl 5-(3-(trifluoromethyl)phenyl)oxazole-2-carboxylate (CAS 2749600-65-3)
- 2-[4-(2-Methoxyethoxy)-3-nitrophenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2490666-00-5)
- 4-(piperidin-3-yl)pyrimidin-2-amine (CAS 1250024-30-6)
- N-(3,5-Dimethoxyphenyl)-4-nitrobenzamide (CAS 152586-91-9)
- m-Anisyllithium (CAS 31600-88-1)
- 2-Chloro-1-(4-cyclohexyl-piperazin-1-yl)-ethanonehydrochloride (CAS 1185296-59-6)
- 3-Amino-5-isopropylbenzoic acid (CAS 123986-62-9)
- Methyl 7-bromobenzo[b]thiophene-3-carboxylate (CAS 1699488-81-7)
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- Stresscopin-Related Peptide (human) (CAS 348626-74-4)
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