Reeds green, white dew is frost. The Chinese have never lacked poetry. What are the reagents whose names are poetic and sound beautiful?

　　Colchicine.

　　Colchicine, a alkaloid, was originally extracted from the liliaceae plant colchicus, hence the name of colchicine.

　　Pure colchicine yellow needle crystal, melting point 157 ℃. Soluble in water, ethanol and chloroform. It inhibits the mitosis of the cell, destroys the spindle, and causes the chromosome to stagnate in the middle of the division.

　　Colchicine, although the name is beautiful, but is extremely poisonous. It has a direct inhibitory effect on the bone marrow, causing granulocyte deficiency, aplastic anemia, liver and kidney damage.

　　2. The red

　　Eosin is a kind of red acid dyestuff. Histology is used to dye epithelial cells, muscle fibers and cytoplasm.

　　3. Methylene blue

　　Methylene blue, methylene blue, methylene blue, blue and blue, is an aromatic heterocyclic compound used as a chemical indicator, dye, biological stain, and drug use. The aqueous solution of meilian is blue in the oxidizing environment, but the reducing agent, such as zinc and ammonia, will be reduced to a colorless state.

　　4. Thymol blue

　　Does thymol blue sound like a character in a wuxia novel? Thymol blue is also known as thymol blue, thymol sulfonphthalein, thymol sulfonphthalein, palm green crystalline powder, and odor. Soluble in ethanol yellow, soluble in dilute lye in blue, insoluble in water. It is an acid base indicator, pH1.2(red) -- 2.8(yellow), 8.0(yellow) -- 9.6(blue).

　　5. Bromothymol blue.

　　Bromothymol blue, alias bromothymol blue, bromothymol blue, is an acid base indicator, adsorption indicator. In biological experiments, it is often used as a respiratory reagent for aquatic organisms.