How to Write 莰 (kǎn) — Meaning “camphane (chemical prefix)”

Imagine 'grass' (艹) growing out of a 'pit' (坎) — and this grass is used to make 'camphor', which sounds like 'kan' - for. The word 'kan' also reminds you of 'can', as in "you can get camphane from plants."

Write the top grass radical 艹 first with three strokes (horizontal, vertical, vertical). Then write the bottom part 坎: start with 土 (three strokes: horizontal, vertical, horizontal), then 欠 (four strokes: left-falling, horizontal hook, left-falling, right-falling). Common mistake is making the bottom too narrow; keep the top wide to cover 坎.

Unlike 莰 which has 坎 (pit) below, 兹 (cí/zī) has a different lower part (usually 玄 or 糸) and means 'now' or 'this'. 苑 (yuàn) has 夗 below (related to bending) and means 'garden' or 'enclosure'. Visually, 莰 has a distinct 'pit' component, while 兹 and 苑 have different radicals below.

莰 is a specialized chemical prefix used in organic chemistry terminology, such as 莰烷 (camphane) and 莰烯 (camphene). It appears almost exclusively in scientific writing, especially textbooks on natural product chemistry. This character is not part of everyday vocabulary and is not tested in HSK.

Common words containing 莰 include: 莰烷 (kǎn wán) — camphane; 莰烯 (kǎn xī) — camphene; 莰酮 (kǎn tóng) — camphor (chemical compound).