Guanidine Thiocyanate

RNA Extraction by the Guanidine Thiocyanate Procedure

This method relies on the strong chaotropic nature of the reagents involved to completely denature any ribonuclease (RNase) present in the sample. After lysis in guanidine thiocyanate buffers there are two possibilities for isolation

胍guanidine

　　亦称亚氨基脲或氨甲酰胺。易溶于水和醇，水溶液而作为一元碱而起作用。少量存在于救荒野豌豆（ Vicia sativa）的苗和甜菜的汁液中。在人尿中也能找到少量，但在尿毒症时可增加数倍。据认为是尿毒症症状的原因之一，投予时可呈现尿毒症样中毒。系一种肌肉毒，可使神经末梢兴奋，另外可作为钙的颉颃剂而起作用。其盐酸盐是类似尿素作用的蛋白变性剂。  

Acid-guanidinium thiocyanate-phenol-chloroform RNA purification

    N.B: Care must be taken when handling solutions containing high concentrations of guanidine salts due to its chaotropic nature. As with other procedures involving RNA, gloves should be worn at all times to avoid contamination of samples