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Jyutping gaap3 gei1 wong4 sin1 on1
Pinyin jiǎ jī huáng xiān ān

Definitions (Wiktionary)
  1. noun, Hong-Kong, Mainland-China
    methanesulfonamide (CH₃SO₂NH₂)
    (syn.) 甲基磺醯胺

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Jyutping gaap3 gei1 wong4 sin1 on1
Pinyin jiǎ jī huáng xiān àn

Definitions (Wiktionary)
  1. noun, Hong-Kong, Mainland-China
    methanesulfonamide (CH₃SO₂NH₂)
    (syn.) 甲基磺醯胺