The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.19752-84-2, Name is Tetrahydro-2H-pyran-3-ol, molecular formula is C5H10O2. In a Article£¬once mentioned of 19752-84-2, Application In Synthesis of Tetrahydro-2H-pyran-3-ol
Chemical composition of fennel seed extract and determination of fenchone in commercial formulations by GC?MS method
In the present study, various phytoconstituents of methanolic extract of Foeniculum vulgare were identified using gas-chromatography mass spectrometry (GC?MS) method. GC?MS method was also applied for the analysis of biomarker fenchone in extract and eight different commercial formulations. The mass of prepared extract and formulations A?D and H (commercial herbal mixtures and commercial extract) used for the analysis of fenchone was 10?g. However, the mass of formulations E?G (soft gelatin capsules) was 100?mg. Fifty seven different phytoconstituents were identified in the methanolic extract of F. vulgare using GC?MS technique. The main compounds identified were trans-anethole (31.49%), 2-pentanone (25.01%), fenchone (11.68%) and benzaldehyde-4-methoxy (8.01%). Several other compounds were also identified in higher amounts and some compounds were identified in trace amounts. Many compounds have been reported for the first time in the methanolic extract of F. vulgare. The amount of fenchone was found to be maximum in plant extract (9.789?mg/g) in comparison with other commercial formulations by the proposed GC?MS technique. In three different commercial formulations (F, G and H), the amount of fenchone was obtained as more than 1.0?mg/g. However, in five different commercial formulations (A, B, C, D and E), the amount of fenchone was recorded as less than 0.1?mg/g. This method could be utilized for the analysis of fenchone contents in the commercial formulations containing fenchone as an active ingredient. The results obtained in this work could be useful in standardization of commercial formulations containing fenchone.
The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 19752-84-2 is helpful to your research., Application In Synthesis of Tetrahydro-2H-pyran-3-ol
Reference£º
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics