#$%^&*AU2013100531B420131128.pdf#####HrxsutntenvovemlNRPorlo11DCCRXSW072100-,000 Abstract The present invention relates to crystaIline forms and hydrates of 2-Amino-2-(2-(4-C2 20-alkylphenyl)ethyl]propane-1 ,3-diol, and to the use thereof, in particular in the treatment or prevention of various autoimmune conditions.