Ethyl 5-(phenylethynyl)nicotinate CAS 175203-65-3
| CAS No. | 175203-65-3 |
| Molecular Formula | C16H13NO2 |
| Molecular Weight | 251.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Ethyl 5-(phenylethynyl)nicotinate (CAS 175203-65-3), a certified reference material (molecular formula C16H13NO2, MW 251.28 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Ethyl 5-(phenylethynyl)nicotinate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 251.28 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C16H13NO2 |
| Molecular Weight | 251.28 g/mol |
| Appearance | Pale yellow to 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2007 |
| Nitrogen Atoms | 1 |
Related Ethyl Standards
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- Ethyl 4-(phenylethynyl)benzoate (CAS 63164-96-5)
- 2-(Phenylethynyl)-1,1'-biphenyl (CAS 10271-65-5)
- 5-(Phenylethynyl)isobenzofuran-1,3-dione (CAS 119389-05-8)
- 2-(Phenylethynyl)-7,8-dihydroquinolin-5(6H)-one (CAS 864224-08-8)
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Recommended Standards
- Methyl 3-amino-5-(4-fluorophenyl)thiophene-2-carboxylate (CAS 175137-08-3)
- 4-Indol-1-ylmethylbenzoic acid (CAS 177548-85-5)
- 3-Amino-2-(m-tolyl)quinazolin-4(3H)-one (CAS 174680-31-0)
- 2-(1-Ethyl-1H-pyrazol-4-yl)-1-methyl-6-oxopiperidine-3-carboxylic acid (CAS 1779127-35-3)
- tert-Butyl N-[(3S,6S)-6-(hydroxymethyl)oxan-3-yl]carbamate (CAS 603130-24-1)
- 3-(Benzyloxy)benzo[b]thiophene-2-carboxylic acid (CAS 722517-00-2)
- 6-Chloro-N4-(2-fluorophenyl)pyrimidine-2,4-diamine (CAS 946359-46-2)
- 6-methyl-1h-indazole-3-carboxamide (CAS 1519055-70-9)
- 6-Chloro-4-[(2,2,3,3-d4-cyclopropylethynyl)trifluoromethylhydroxymethyl]-3H-benzoxazol-2-one (CAS 1189694-49-2)
- 1-(2-Fluoro-5-methylphenyl)-5-oxopyrrolidine-3-carboxylic acid (CAS 346446-24-0)
- (S)-tert-Butyl 3-(1-methylethylsulfonamido)piperidine-1-carboxylate (CAS 1349702-34-6)
- 6-Quinolinylmethanol (CAS 100516-88-9)
- S-(-)-Nicotine-Δ1’(5’)-iminium Diperchlorate Salt (CAS 71014-67-0)
- Semaglutide impurity 77 (CAS CATO-C4X-222677)
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