1,3-Dimethyl-5-(phenylethynyl)benzene CAS 201278-01-5
| CAS No. | 201278-01-5 |
| Molecular Formula | C16H14 |
| Molecular Weight | 206.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,3-Dimethyl-5-(phenylethynyl)benzene (CAS 201278-01-5), molecular formula C16H14 and molecular weight 206.28 g/mol, is a CATO reference standard with documented purity and traceability.
1,3-Dimethyl-5-(phenylethynyl)benzene (C16H14) contains a polycyclic aromatic system. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
CATO manufactures 1,3-Dimethyl-5-(phenylethynyl)benzene under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C16H14 |
| Molecular Weight | 206.28 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2014 |
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Recommended Standards
- 1,2-Di-p-tolylethyne (CAS 2789-88-0)
- 1,3-Dimethylanthracene (CAS 610-46-8)
- 1,2-Di-o-tolylethyne (CAS 5294-03-1)
- 1,4-Dimethoxy-2-(3-methylbut-3-en-1-yl)benzene (CAS 951891-21-7)
- (3R,4S)-1-(4-Fluorophenyl)-3-((S)-3-(4-fluorophenyl)-3-hydroxypropyl)-4-(4-hydroxyphenyl)azetidin-2-one (CAS 438576-93-3)
- 7-Bromo-6-methoxy-3,4-dihydronaphthalen-1(2H)-one (CAS 1273666-60-6)
- 1-[(4-methylphenyl)methyl]-5-oxopyrrolidine-2-carboxylic acid (CAS 2211041-37-9)
- Papaverine Impurity 14 Hcl (CAS 18694-10-5（free base）)
- 6-Amino-3-(tert-butyl)-4-(4-fluorophenyl)-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile (CAS 304880-81-7)
- Gadobutrol Impurity B HCl (CAS 2349341-85-9(free base))
- N,N'-(Oxybis(4,1-phenylene))diisonicotinamide (CAS 328010-11-3)
- Flecainide acetate-D4 (CAS 1276197-21-7)
- 3-Bromo-2-fluoro-5-(trifluoromethyl)benzenesulfonyl chloride (CAS 2387196-53-2)
- D-Lys20-Tirzepatide (CAS CATO-CPTD788914)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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