THE difference between the odours of the two optical isomers of carvone has been recognized for some time; (+)-carvone (isolated from caraway oil) was characterized as caraway-like while (−)-carvone (isolated from spearmint oil), as spearmint-like 1 . Samples purified by gas–liquid chroma...
a. Ketone b. Ester c. Aldehyde d. Amide Identify all the functional groups in the following organic compound. Why can't an organic molecule have the formula C2H7? What is the difference between enantiomers, diastereomers, constitutional isomers, and meso compounds? Compared to organic ...
The bottom plate of the toggle switch uses synthetic resin such as polycarbonate, so the potentiometer shall not be exposed to the strong atmosphere of ammonia, amine, alkali solution, hematoxylin, ketone, ester, halohydrocarbon and other chemicals. 2. Use flux with caution Avoid using water-solu...
ions in CID-MS/MS, though the fragmentation pattern was significantly different between 2a (R = tert-butyl) and 2b–2d (R = isopropyl, ethyl and methyl, respectively): 2a exhibited mainly α-cleavage of a ketone moiety, while 2b–2d showed β-cleavage of the aromatic ester ...
A birefringence index (Δn) of the polymerizable liquid crystal monomer indicates a difference between a refractive index (ne) of an extraordinary ray and a refractive index (no) of an ordinary ray as described above. For measuring ne and no, an Abbe refractometer (“DR-M4” manufactured by...
The key difference between oxybenzone and avobenzone is that oxybenzone is safe to be used in sunscreen that is applied on human skin, whereas avobenzone i
The key difference between hydrazine and hydrazine hydrate is that hydrazine is an inorganic compound having the chemical formula N2H4, whereas hydrazine h
Table 1. Physical and chemical properties of dry-cured meat with the addition of different low-sodium salts. As shown in Table 1, the weight loss rate of each group basically remained between 45.46% and 55.68%, though the weight loss rate of S (55.68%) was higher than that of other ...