Dabigatran etexilate tetrahydrate, C34H49N7O9, has been crystallised at ambient conditions. The colourless crystal was investigated using X-ray crystallography with single crystals and powder techniques, and was characterised by thermogravimetric-differential thermal analysis (TG-DTA) and infrared spectroscopy (IR). The compound was shown to be a tetrahydrate. A dabigatran etexilate molecule and four water molecules form a large ring structure, and intra-molecular hydrogen bonds contribute to the formation of a stable molecule in the unit cell.
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