- sudan Ⅳ: a red disazo solvent dye used chiefly as a biological stain and in ointments for promoting the growrth of epithelium — called also scarlet red.
（苏丹Ⅳ：一种红色重氮溶剂染料，主要用作生物着色剂及用在促进上皮生长的软膏中。亦称猩红。）
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