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1. The copious benzene rings and potential carboxylic acid groups in coal suggest that these transformations might not be too difficult.

2. The esterification mechanism of unsaturated carboxylic acid was analyzed.

3. Carboxylic acid esters are important chemical raw materials.

4. A method of hydrogenating the nitrile containing carboxylic acid acids obtained by above hydrocyanation to produce amine containing carboxylic acids is also disclosed in this invention.

5. A oxazolidine carboxylic acid tanning agent-MOCA has been synthesized by condensing DL-threonine with formaldehyde.

6. of 2, 2 - dimethylthiazolidine 4 - carboxylic acid and its hydrochloride in microwave.

7. Stearic acid (octadecanoic acid) A saturated carboxylic acid, which is widely distributed in nature as the glyceride ester.

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8. Lactic acid: Carboxylic acid found in certain plant juices, in blood and muscle, and in soil.

9. A solidification matrix includes a straight chain saturated carboxylic acid salt, sodium carbonate, and water.

10. The effect of potassium borohydride on ester and carboxylic acid reduction was introduced.

11. Preparation methods and degradation behavior for poly ( carboxylic acid silyl ester ) s were reviewed.

12. Preferably, the carboxylic acid raw material contains glutaric acid, adipic acid, pimelic acid, suberic acid, sebacic acid and 1,9-nanomethylenedicarboxylic acid in a total amount of 5 mass% or less.

13. Carboxylic acid ester compound, liquid crystal compound, liquid crystal composition, liquid crystal element and light modulation method.

14. A series of novel liquid crystalline aromatic carboxylic acid compounds are synthesized.

15. Oxalic acid: Colourless, crystalline, toxic carboxylic acid found in many plants, especially rhubarb, wood sorrel , and spinach.

16. An especially preferred metal chelating group is a carboxylic acid group.

17. It was prepared by the reaction of 12 H - dibenzo [ d , g ] [ 1,3 ] dioxocin - 6 - carboxylic acid with acetoxime.

18. The study result indicated that the white powdered particles were mainly composed of calcium salts of long chain carboxylic acid, namely the calcium stearate.

19. The most commonly used method for the covalent binding of biomolecules onto 1-D nanostructures is through the diimide-activated amidation of carboxylic acid terminated nanostructures.

20. R 2 is H , amino acid residues, alkyloxyethyl formyl, organic carboxylic acid acyl , phosphoryl, and alkyl.

21. Effects of process conditions such as content of composite carboxylic acid, initial current density and anodizing time on properties of film were studied.

22. An improved synthetic route for 4 ? ? heptoxybiphenyl 4 carboxylic acid was studied.

23. Eventually, the researchers found that two samples - segments 2 - methyl alcohol and indole ring - 6 - carboxylic acid.

24. FD is a kind of re tanning agent condensated with glyoxal, formaldehyde, carboxylic acid and urea.

25. Synthesis of acyl azide from aldehyde, or acylhydrazine, or carboxylic acid , or acyl chloride, or anhydride, or ester is introduced in this paper.

26. Proteolytic enzymes catalyze oligomerization of the. alpha . - hydroxy carboxylic acid and . alpha . - amino acid.

27. It showed that EAA had released the original interlayer exchangeable carbonate anions of the LDH, and reacted with LDH forming carboxylic acid metal ionic bond.

28. The rate constant of racemization of L-Pro increased with decreasing acidity of the carboxylic acid. However, the racemization of L-His was most rapid in acetic acid.

29. Sodium ammonium triacetate(SAT)has been investigated as a non-phosphorus catalyst for esterification crosslinking of cotton with 1,2,3,4-butanetetra carboxylic acid(BTCA).

30. A group of polyamides formed by the condensation between an amino group of one molecule and a carboxylic acid group of another.