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S-(+)-Carvone is the principal constituent (60–70%) of the oil from caraway seeds (Carum carvi), [8] which is produced on a scale of about 10 tonnes per year. [3] It also occurs to the extent of about 40–60% in dill seed oil (from Anethum graveolens), and also in mandarin orange peel oil.
[1] [2] It is also used in chemical synthesis as a precursor to carvone and as a renewables-based solvent in cleaning products. [1] The less common (-)-isomer has a piny, turpentine-like odor, and is found in the edible parts of such plants as caraway, dill, and bergamot orange plants. [3] Limonene takes its name from Italian limone ("lemon"). [4]
Levopropoxyphene is an antitussive.It is an optical isomer of dextropropoxyphene.The racemic mixture is called propoxyphene.Only the dextro-isomer (dextropropoxyphene) has an analgesic effect; the levo-isomer appears to exert only an antitussive effect.
The mechanism of [2+2] photocyclization is proposed to begin with photoexcitation of the enone to a singlet excited state. The singlet state is typically very short lived, and decays by intersystem crossing to the triplet state. At this point, the enone forms an exciplex with the ground state alkene, eventually giving the triplet diradical.
A single Adderall dose combines the neutral sulfate salts of dextroamphetamine and amphetamine, with the dextro isomer of amphetamine saccharate and D/L-amphetamine aspartate monohydrate. The original Benzedrine was a racemic mixture, and isolated dextroamphetamine was later introduced to the market as Dexedrine.
Granita (Italian: [ɡraˈniːta]), in Italian also granita siciliana [1] (Italian: [ɡraˈniːta sitʃiˈljaːna]), is a semi-frozen dessert made from sugar, water, and various flavorings. Originally from Sicily , it is available throughout Italy in varying forms. [ 2 ]
This Dutch oven comes in a wide range of sizes, from 2 quarts all the way up to 13.25 quarts, and we tested the popular 7.25-quart size, which is recommended for cooking seven or eight servings at ...
It is also known as L-α-methyl-β-phenylethylamine or as (2R)-1-phenylpropan-2-amine. [8] Levoamphetamine is the levorotatory stereoisomer of the amphetamine molecule. Racemic amphetamine contains two optical isomers in equal amounts, dextroamphetamine (the dextrorotatory enantiomer) and levoamphetamine. [20] [21]