3-(環己氨)-2-羥基丙磺酸（CAPSO），CAS：73463-39-5是一種常用的生物緩沖劑，如用于硝酸纖維素膜的蛋白印跡等。
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Purity
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>99.0%
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pH (1% aq.)
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5.0~6.5
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Loss on drying
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≤1.0%
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UV absorbance/260nm
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≤0.040
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UV absorbance/280nm
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≤0.030
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Appearance
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White powder
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