| 摘要 |
The present invention provides an enzyme which is an odourless, white powder, the pH of a 15000 to 22000 IU/ml. solution of which in carbon dioxide-free physiological saline solution suitable for injection is 4.5 to 7.5, the solution being clear and colourless; a solution of 50000 IU of which in 3 ml. carbon dioxide-free physiological saline solution suitable for injection has a light absorption of not more than 0.60 at 280 nm and of not more than 0.37 at 260 nm; said enzyme having a total hexose content of 10.6 +/- 0.003%; said enzyme containing not more than 5 mu g. albumin per 220000 IU of activity and said enzyme having a molecular weight of 62000 to 70000 determined by gel filtration. The present invention provides a process for preparing this enzyme and a dosage unit containing it.
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