| abstract |
A crystalline form of an avibactam derivative (1), i.e. crystalline ethyl 3-(((((1R,2S,5R)-2-carbamoyl-7-oxo-l,6-diazabicyclo[3.2.1]octan-6-yl)oxy)sulfonyl)oxy)-2,2-dimethylpropanoate anhydrate (I), pharmaceutical compositions thereof, and the use of the crystalline avibactam derivative for treating bacterial infections are provided. |