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Threose is a four-carbon monosaccharide with molecular formula C 4 H 8 O 4. It has a terminal aldehyde group, rather than a ketone , in its linear chain and so is considered part of the aldose family of monosaccharides.
Two older prefixes still commonly used to distinguish diastereomers are threo and erythro. In the case of saccharides, when drawn in the Fischer projection the erythro isomer has two identical substituents on the same side and the threo isomer has them on opposite sides. [ 7 ]
The natural isomer is D-erythrose; it is a diastereomer of D-threose. [3] Fischer projections depicting the two enantiomers of erythrose. Erythrose was first isolated in 1849 from rhubarb by the French pharmacist Louis Feux Joseph Garot (1798-1869), [4] and was named as such because of its red hue in the presence of alkali metals ...
3. Honey. Type: Natural sweetener. Potential benefits: Honey contains more nutrients than table sugar, including antioxidants, minerals, and vitamins.It’s also easier to digest than table sugar ...
What’s your favorite screen-free thing to do when you’re bored? Share your tried-and-true anti-boredom tips in the comments below.
This article was reviewed by Craig Primack, MD, FACP, FAAP, FOMA. Whey, hemp, soy, casein — looking at different types of protein powder can get a little overwhelming. OK, a lot overwhelming ...
Used to provide power to the filament of a vacuum tube. B Battery: Eveready 762-S: 45 V: Threaded posts H: 146 L: 104.8 W: 63.5 Used to supply plate voltage in vintage vacuum tube equipment. Origin of the term B+ for plate voltage power supplies. Multiple B batteries may be connected in series to provide voltages as high as 300 V DC.
Warmest: Mobile, Alabama. The average high temperature in Mobile is a balmy 78 degrees. A few other cities, also on the Gulf in the southern part of the state, have the same average, so if you're ...