5-(3,4-Dimethoxybenzoyl)-2-methylpyridine CAS 1187166-99-9
| CAS No. | 1187166-99-9 |
| Molecular Formula | C15H15NO3 |
| Molecular Weight | 257.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-(3,4-Dimethoxybenzoyl)-2-methylpyridine (CAS 1187166-99-9), molecular formula C15H15NO3 and molecular weight 257.28 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-(3,4-Dimethoxybenzoyl)-2-methylpyridine (C15H15NO3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 257.28 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.
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 | C15H15NO3 |
| Molecular Weight | 257.28 g/mol |
| Appearance | Pale yellow to 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 1 |
Related Dimethoxybenzoyl Standards
- 2-(2,6-Dimethoxybenzoyl)-4-methylpyridine (CAS 1187163-86-5)
- 2-(2,5-Dimethoxybenzoyl)-4-methylpyridine (CAS 1187164-11-9)
- 2-(2,4-Dimethoxybenzoyl)-3-methylpyridine (CAS 1187164-69-7)
- 2-(3,5-Dimethoxybenzoyl)-3-methylpyridine (CAS 1187164-73-3)
- 2-(2,6-Dimethoxybenzoyl)-5-methylpyridine (CAS 1187164-85-7)
- 5-(2,3-Dimethoxybenzoyl)-2-methylpyridine (CAS 1187164-89-1)
- 1187167-56-1 4-(2,6-Dimethoxybenzoyl)-2-methylpyridine MFCD13153330 (CAS 1187167-56-1)
- 4-(2,5-Dimethoxybenzoyl)-2-methylpyridine (CAS 1187169-19-2)
Recommended Standards
- (2,6-Dimethoxyphenyl)(3-methylpyridin-2-yl)methanone (CAS 1187166-13-7)
- (2,3-Dimethoxyphenyl)(4-methylpyridin-2-yl)methanone (CAS 1187167-11-8)
- (2,5-Dimethoxyphenyl)(6-methylpyridin-2-yl)methanone (CAS 1187165-96-3)
- (2,3-Dimethoxyphenyl)(3-methylpyridin-2-yl)methanone (CAS 1187165-95-2)
- rel-6-((4R,5R)-5-(Mercaptomethyl)-2-oxoimidazolidin-4-yl)hexanoic acid (CAS 139936-57-5)
- Pcb No. 35 (CAS 37680-69-6)
- 3-(2-Methoxy-phenyl)-isoxazole-5-carboxylic acid (CAS 885273-84-7)
- 5-(3,4-Dichlorophenyl)-4-ethyl-4H-1,2,4-triazole-3-thiol (CAS 660417-18-5)
- 3-chlorobicyclo[1.1.1]pentane-1-sulfonyl chloride (CAS 132145-26-7)
- 4-(6-Chloro-2-methylpyridin-3-yl)benzoic acid (CAS 1345472-36-7)
- 5-(Chloromethyl)-3-(difluoromethyl)-4-(trifluoromethyl)pyridin-2-amine (CAS 1804721-50-3)
- 5-(1H-Pyrazol-5-yl)thiophene-2-carbaldehyde (CAS 1015939-92-0)
- 2-(2,5-Dimethoxyphenyl)-2-methyloxirane (CAS 75632-56-3)
- Semaglutide impurity 269 (CAS CATO-C4X-2226269)
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