Marckwald in his “asymmetric synthesis” of valeric acid, noticed in your issue of February 25, we desire to point out that it is not a true asymmetric synthesis in the ordinary sense.

Standard substances of acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, isovaleric acid, and hexanoic acid were prepared with concentration gradients ranging from 0.1 to 100 ...

Crude protein was determined by automatic Kjeldahl nitrogen tester; crude fat was extracted by Soxhlet extractor; acid washed fiber ... propionic, butyric, valeric, and valeric acids, were determined ...

be believed, the last thing you should feel when you secretly tuck into hunk of chocolate is guilty. data to confirm this link. Scientists at Missouri University even gave spot-prone subjects ...

Glycolic acid is a substance that chemically exfoliates a person’s skin by dissolving dead skin cells and oils. Glycolic acid may also help boost collagen production, and support skin moisture.

Effect of width of disk fenestration and a ventral slot on biomechanics of the canine C5-C6 vertebral motion unit. Epidemiologic cutoff values for antimicrobial agents against Aeromonas ...

Polymeric materials, often represented as thread-like molecules, are frequently utilized as network structures through the chemical or physical cross-linking of polymer chains. Recently, materials ...

Background—Populations at low risk of colonic cancer consume large amounts of fibre and starch and pass acid, bulky stools. One short chain fatty acid (SCFA), butyrate, is the colon’s main energy ...

State Key Laboratory of Pulp and Paper Engineering; School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China ...

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