xanthematin

例句：

1. 1. The patient's skin was covered in a yellowish-brown pigmentation that resembled the spots on a dinosaur.
   患者的皮肤覆盖着一种黄色至棕色的色素沉着，类似于恐龙身上的斑点。
2. 2. The researcher discovered that the xanthematin in the plant extract had significant anti-inflammatory properties.
   研究者发现植物提取物中的黄褐斑素具有显著的抗炎特性。
3. 3. The study focused on the potential therapeutic uses of xanthematin in treating various skin conditions.
   该研究专注于黄褐斑素在治疗各种皮肤状况中的潜在治疗用途。