How to Write 脎 (sà) — Meaning “osazone”

Imagine a "moon" (月) that has been "killed" (杀) by a chemical reaction, turning it into a strange sugar compound. The left side is the body part, and the right side means "kill" — together they suggest a chemical process that destroys the original sugar structure. This odd image helps link the character to the chemical term osazone.

Pay attention to the radical 月: its first stroke is a vertical left-falling stroke (丿), not a straight vertical line. The right side 杀 has a cross (乂) with a small hook below; make sure the hook is short and does not extend too far left. Common mistakes include making the right side too wide or confusing the bottom part of 杀 with a different shape like 木.

脎 (sà) means a type of chemical compound (osazone), while 朊 (ruǎn) refers to a unit of measurement or organic matter like protein, and 朋 (péng) means friend. Visually, 脎 has 杀 on the right, 朊 has 元 (yuan) on the right, and 朋 is two 月 side by side. The radical 月 appears in all three but with different right-side components and meanings.

脎 is a specialized chemical term used mainly in organic chemistry, especially in discussions of sugar reactions like osazone formation. It is not part of everyday vocabulary or HSK lists and appears in academic or technical texts. Cultural notes are minimal since it is purely scientific, but knowing it can help learners recognize compound words like 糖脎 (sugar osazone) in chemistry contexts.

Common words containing 脎 include: 脎 (sà) — osazone; 糖脎 (táng sà) — Osazone; 苯脎 (běn sà) — Phenylosazone.