How To Use hydroxybenzoic acid In A Sentence
- Of the three classes of isomeric anhydrides which can be formed from hydroxybenzoic acids, the chemistry of the natural tannins is only concerned with the class comprising the ester anhydrides. Synthetic Tannins
- If the carboxyl of the first molecule combines with a hydroxyl of the second molecule (ester formation), then a substance possessing character similar to that of a hydroxybenzoic acid is formed, which is capable of combining up with a further molecule in the same way. Synthetic Tannins
- The nitrated peptides were eluted with 50% acetonitrile/0. 2% trifluoroacetic acid, dried, resuspended in 1.5 µl of matrix suspension (4 mg α-cyano-4-hydroxycinnamic acid, 0.8 mg 3,5-dihydroxybenzoic acid in 50% acetonitrile/0. 1% trifluoroacetic acid, 0.1 mM fucose), and deposited on a stainless steel target. PLoS ONE Alerts: New Articles
- The chlorides, being for the most part solids, the mode of procedure is as follows: -- the hydroxybenzoic acid required for coupling is dissolved in normal or double-normal alkali (the volume calculated per molecule acid), a little acetone added, and the mixture well cooled; Synthetic Tannins
- This simple procedure, however, is not applicable to most other hydroxybenzoic acids which are decomposed at the high temperature necessary to induce reaction. Synthetic Tannins
- These investigators found that by the condensation of phenols and hydroxybenzoic acids with formaldehyde, diphenylmethane derivatives were formed; pyrogallol yields hexahydroxydiphenylmethane -- Synthetic Tannins
- Similarly to sugar, the true glucosides can be coupled with hydroxybenzoic acids, which is proved by the preparation of tetra-galloyl - [Greek: a] - methyl glucoside; this substance, also, exhibits tannoid character. Synthetic Tannins
- Structural analogs, such as phenol, p-hydroxybenzoic acid and p-aminobenzoic acid, only small responses electrode were observed. Moreover, structural unanalog vitamin C had almost no response.
- Synthesis of the aglycone from 2,4-dihydroxybenzoic acid was achieved in three steps. Chapter 7
- They readily form esters with alcohols, which on subsequent saponification with alkali are converted into the esters of the free hydroxybenzoic acids. Synthetic Tannins
