| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | hydroxylamine | chemistry laboratories in industrialized countries | Used as a reagent in organic synthesis and pharmaceutical production | 1 |
| 2 | hydroxylamine | chemistry labs | Used as a reagent in chemical reactions | 1 |
| 3 | malonic acid | chemistry labs | Commonly used as a precursor in organic synthesis reactions | 1 |