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An ester of a carboxylic acid.R stands for any group (typically hydrogen or organyl) and R ′ stands for any organyl group.. In chemistry, an ester is a functional group derived from an acid (organic or inorganic) in which the hydrogen atom (H) of at least one acidic hydroxyl group (−OH) of that acid is replaced by an organyl group (R ′).
The Order of the Eastern Star is a Masonic appendant body open to both men and women. It was established in 1850 by lawyer and educator Rob Morris, a noted Freemason, and adopted and approved as an appendant body of the Masonic Fraternity in 1873. The order is based on some teachings from the Bible [1] and is open to people of all religious ...
Estee, Estella, Estelle, Esti, Estrella, Hadassah, Hester, Stella. Esther (Hebrew: אֶסְתֵּר) is a female given name known from the Jewish queen Esther, eponymous heroine of the Book of Esther. According to the Hebrew Bible, queen Esther was born with the name הֲדַסָּה Hadassah ("Myrtle"). Her name was changed to Esther to ...
14:00, 11 October 2024 EDT [refresh] Observance of DST. DST is observed in parts of this time zone. The Eastern Time Zone (ET) is a time zone encompassing part or all of 23 states in the eastern part of the United States, parts of eastern Canada, and the state of Quintana Roo in Mexico. Places that use:
If the alkyl group is not attached at the end of the chain, the bond position to the ester group is suffixed before "-yl": CH 3 CH 2 CH(CH 3)OOCCH 2 CH 3 may be called butan-2-yl propanoate or butan-2-yl propionate. [citation needed]. The prefix form is "oxycarbonyl-" with the (R') group preceding.
Traditionally, a scroll of Estheris given only one roller, fixed to its lefthand side, rather than the two used for a Torah scroll. [1] The Book of Esther(Hebrew: מְגִלַּת אֶסְתֵּר, romanized: Megillat Ester; Greek: Ἐσθήρ; Latin: Liber Esther), also known in Hebrewas "the Scroll" ("the Megillah"), is a book in the third ...
Polylactic acid, also known as poly (lactic acid) or polylactide (PLA), is a thermoplastic polyester (or polyhydroxyalkanoate) with backbone formula (C3H4O2)n or [–C (CH3)HC (=O)O–]n, formally obtained by condensation of lactic acid C (CH3) (OH)HCOOH with loss of water (hence its name).
Fatty acid methyl ester. Fatty acid methyl esters (FAME) are a type of fatty acid ester that are derived by transesterification of fats with methanol. The molecules in biodiesel are primarily FAME, usually obtained from vegetable oils by transesterification. They are used to produce detergents and biodiesel. [ 1 ]