Methyl 4-(4-methylphenoxy)benzoate CAS 21120-72-9
| CAS No. | 21120-72-9 |
| Molecular Formula | C15H14O3 |
| Molecular Weight | 242.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Methyl 4-(4-methylphenoxy)benzoate (C15H14O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. 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 242.27 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Methyl 4-(4-methylphenoxy)benzoate (CAS 21120-72-9) is a high-purity analytical reference standard with the molecular formula C15H14O3 and a molecular weight of 242.27 g/mol.
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 | C15H14O3 |
| Molecular Weight | 242.27 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.) | 1963 |
Related Methyl Standards
- 2-[(2-Methylphenoxy)methyl]benzoic acid (CAS 108475-90-7)
- 4-[(2-Methylphenoxy)methyl]benzoic acid (CAS 149288-30-2)
- 4-[(3-Methylphenoxy)methyl]benzoic acid (CAS 149288-31-3)
- 2-[2-(4-methylphenoxy)phenyl]acetic acid (CAS 25563-03-5)
- 3-[(3-Methylphenoxy)methyl]benzoic acid (CAS 938279-99-3)
- 2-(2-Methylphenoxy)-N-(pyrimidin-2-yl)acetamide (CAS 723737-15-3)
- 3-Methyl-4-(3-methylphenoxy)-[1,2]oxazolo[5,4-d]pyrimidine (CAS 672925-15-4)
- n-[2-(3-methylphenoxy)ethyl]-1h-imidazole-1-carboxamide (CAS 1087792-52-6)
Recommended Standards
- Methyl 4-((pyridin-3-ylmethyl)amino)benzoate (CAS 353235-71-9)
- Methyl 4'-(hydroxymethyl)-[1,1'-biphenyl]-3-carboxylate (CAS 445492-63-7)
- methyl 3-methoxy-5-oxo-6H-1,6-naphthyridine-2-carboxylate (CAS 2306271-98-5)
- Methyl 4'-(hydroxymethyl)-[1,1'-biphenyl]-4-carboxylate (CAS 393522-78-6)
- 2-Amino-6-isopropyl-4-oxo-4H-chromene-3-carbaldehyde (CAS 68301-82-6)
- Ethyl 1-(2-chlorobenzyl)-1H-pyrazole-4-carboxylate (CAS 1493994-04-9)
- N-Phenyl-1H-indol-4-amine (CAS 1259448-20-8)
- 7-Nitro-3-thiocyanato-1H-indole (CAS 885266-79-5)
- (2S,4S)-4-(benzyloxycarbonylamino)-1-tert-butoxycarbonyl-pyrrolidine-2-carboxylic acid (CAS 874162-99-9)
- 2-Phenyl-4-[(propan-2-ylsulfanyl)methyl]-6-(pyrrolidin-1-yl)pyrimidine (CAS 338961-42-5)
- Benzo[b]thiophene-2-thiol (CAS 30214-04-1)
- 3-(((3,5-Dimethylisoxazol-4-yl)methyl)amino)benzonitrile (CAS 1042774-01-5)
- Ethyl 2-(3-amino-4-methyl-1h-pyrazol-1-yl)butanoate (CAS 1339422-82-0)
- Semaglutide Impurity 124 (CAS CATO-C4X-2226124)
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