羟丙茶碱

拼音qiǎng bǐng chá jiǎn 注音ㄑㄧㄤˇ ㄅㄧㄥˇ ㄔㄚˊ ㄐㄧㄢˇ 更新2026-07-29 02:57:38
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qiang bing cha jian
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qbcj
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ㄑㄧㄤ ㄅㄧㄥ ㄔㄚ ㄐㄧㄢ
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百科释义

Characteristics A white, crystalline powder Complies Identification Positive reaction Complies Loss on drying ≤0.5% 0.20% Melting Point 134~136℃ 134.4~135.5℃ Appearance of solution Clear (2.2.1), Colorless (Method II, 2.2.2) Complies Acidity or alkalinity ≤0.4ml 0.01mol/L NaOH 0.05ml Heavy metals ≤2...