Evidence on the identity of the CXCR2 antagonist AZD-5069

Crystalline forms A and D of N-[2-[[(2,3-difluoropheny)methyl]thio]-6-{[(1R,2S)-2,3-dihydroxy-1-methylpropyl]oxy}-4-pyrimidinyl]-1-azetidinesulfonamide are claimed. The compound is a previously disclosed CXCR2 Chemokine Receptor antagonist and is claimed to be useful in the treatment of inflammatory diseases such as chronic obstructive pulmonary disease (COPD).