Search results
Results from the WOW.Com Content Network
This page was last edited on 28 November 2023, at 03:26 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
Menthol may also enhance the activity of glycine receptors and negatively modulate 5-HT 3 receptors and nAChRs. [11] Menthol is widely used in dental care as a topical antibacterial agent, effective against several types of streptococci and lactobacilli. [12] Menthol also lowers blood pressure and antagonizes vasoconstriction through TRPM8 ...
The Gmelin rare earths handbook lists 1522 °C and 1550 °C as two melting points given in the literature, the most recent reference [Handbook on the chemistry and physics of rare earths, vol.12 (1989)] is given with 1529 °C.
Menthone was first synthesized by oxidation of menthol in 1881, [6] [needs update] [7] before being found as a component in essential oils in 1891. [ citation needed ] Of the isomers possible for this chemical structure (see below), the one termed l -menthone —formally, the (2 S ,5 R )- trans -2-isopropyl-5-methylcyclohexanone (see infobox ...
It is the ester of nicotinic acid (niacin, vitamin B3) and menthol. At room temperature, menthyl nicotinate is a colorless, odorless, viscous liquid. Being a topical lipophilic niacin derivative, menthyl nicotinate is used in cosmetics and personal care products, [2] personal lubricants and intimate hygiene compositions. [3] [4]
Methanol for chemical use normally corresponds to Grade AA. In addition to water, typical impurities include acetone and ethanol (which are very difficult to separate by distillation). UV-vis spectroscopy is a convenient method for detecting aromatic impurities. Water content can be determined by the Karl-Fischer titration.
Print/export Download as PDF; Printable version; ... soluble in strongly alkaline water Melting point: 29.8 °C (303.0 K) 11.8 °C (285.0 K)
It is thus more highly valued as an intermediate for the preparation of flavor and fragrance chemicals, such as menthol, citral, citronellol, citronellal, geraniol, nerol, and linalool. [ 4 ] Both myrcene and myrcenol undergo Diels–Alder reactions with several dienophiles , such as acrolein , to give cyclohexene derivatives that are also ...