how many chiral carbons are present in the terpene menthol shown below?
318336
Since menthol has three chiral centers (asymmetric carbons), structure (1) is one of eight stereoisomers. These isomers can be grouped in two sets of four diastereoisomers.
771359
Each teaspoonful (5 mL) contains: 153 mg ammonium carbonate, 267 mg potassium bicarbonate, 22 mg menthol, and 2.2 mg camphor.
1029850
The main ingredients of Vicks VapoRub include camphor 4.8%, eucalyptus oil, menthol 2.6%, thymol, and several other ingredients. Thymol, or 5-methyl-2-(1-methylethyl) phenol, is a phenol derivative that can have antiseptic and preservative properties.
1190894
For fructose, there are only three asymmetric carbons, so only 8 or 23 stereoisomers can be produced.
973309
One mentholated product, Natural American Spirit Light-Green, had the highest measured menthol content (19.6 mg/cigarette). The “mellow” flavored Natural American Spirit Yellow, had a measured menthol level of 0.004 mg/cigarette.
20995
There are no internal mirror planes, so every carbon atom is different. The four chiral centres (with their attached groups) are: C2 (OH,C1, C3, H) C3 (OH, C2, C4, H)
1212213
How many stereoisomers are possible for this aldopentose? There are 2 chiral carbons, so, 22, or 4 possible stereoisomers. This is a D isomer, since the OH on the chiral carbon furthest from the C=O is on the right.
831644
In a study by Casano et al, OG strains have relatively higher levels of α-terpineol, fenchol, limonene, camphene, terpinolene and linalool; whereas, Kush strains are characterized mainly by the compounds trans-ocimene, guaiol, β-eudesmol, myrcene and α-pinene.
808684
Vitamin C has the chemical formula C6H8O6 and a molecular mass of 176.14 grams per mol. Vitamin C is purely the L-enantiomer of ascorbate; the opposite D-enantiomer has no physiological significance. Both forms are mirror images of the same molecular structure.
19062
Products of the first turn of the cycle are one GTP (or ATP), three NADH, one QH2 and two CO2. Because two acetyl-CoA molecules are produced from each glucose molecule, two cycles are required per glucose molecule. Therefore, at the end of two cycles, the products are: two GTP, six NADH, two QH2, and four CO2.
1093830
['Blue Pack. Plain/Regular. Tar (K)16.0 mg. ... ', "Light Blue Pack. 'Regular Full-Bodied Taste' ... ", "Green Pack. 'Menthol Full-Bodied Taste' ... ", "Green White Pack. 'Menthol Light Mellow Taste' ... ", "Sage Pack. 'Medium Balanced Taste' ... ", "Yellow White Pack. 'Ultra Light Mellow Taste' ... ", "Yellow Pack. 'Light Mellow Taste' ... ", "Gold Pack. Organic 'Light Mellow Taste'"]
42433
Petrolatum, Lanolin, Euphorbia Cerifera Cera, Ethylhexyl Methoxycinnamate, Benzophenone-3, Ozokerite, Cetyl Esters, Theobroma Cacao Seed Butter, Cera Alba, Paraffin, Parfum, Camphor, Menthol, Salicylic Acid, Vanillin.
785923
In the first member of ketone series there are three carbon atoms.
983649
Ingredients. Cyclopentasiloxane, Isopropyl Palmitate, Stearyl Alcohol, Mineral Oil, Talc, Hydrogenated Castor Oil, Fragrance (Parfum), Steareth-100, BHT.
779392
Ingredients: Proprietary Blend of Lavender Oil, Peppermint Oil, Ginger Oil and Spearment Oil Caution: Children should be supervised when using. For inhalation use only.
570167
2-Butanol is chiral and thus can be obtained as either of two stereoisomers designated as (R)-(−)-2-butanol and (S)-(+)-2-butanol. It is normally found as an equal mixture of the two stereoisomers — a racemic mixture. so it is optically active compound.
1091384
Introduction. Geraniol (3,7-dimethylocta-trans-2,6-dien-1-ol) is an acyclic monoterpene alcohol with the chemical formula C10H18O. The product referred to as “geraniol” is a mixture of the two cis-trans isomers (Fig. 1) properly named geraniol (trans) and nerol (cis).