Add A Qin Reading next to a word and A Qin Reading next to a word.

2, radical: oral five strokes: KDWT

3. Interpretation: Transliteration of organic compounds.

4. The word [-zine] is used to indicate organic compounds. For example, "bǐqín" is another name for p- diazepam, and its molecular formula is C 4 H 4 N 2 (pyrazine in English).

5. Piperazine, also known as p-diazepam, has a molecular weight of 86. 14. It is a common compound in chemical production.