異硫氰酸胍（Guanidine Thiocyanate），CAS：593-84-0為離液劑和強變性劑，用于變性裂解細胞；提取RNA和DNA。
質量指標：
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Purity
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≥99.5%
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Solution state
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Clear and colorless(35%,water)
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UV Abs.@280nm
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≤0.2% (35%,water)
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UV Abs.@300nm
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≤0.05% (35%,water)
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Melting point
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118~121℃
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pH(11.8%,water solution)
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5.0~7.0
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Moisture
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≤0.3%
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Ash
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≤0.1%
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Ammonium
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≤0.1%
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Iron
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≤0.1ppm
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Appearance
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White crystals
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