The present disclosure relates to crystalline forms of 8-(2-fluorobenzyl)-6-(3-(trifluoromethyl)-1H-1,2,4-triazol-5-yl)imidazo[1,2-a]pyrazine, which are useful as a stimulator of soluble guanylate cyclase (sGC). The present disclosure also provides pharmaceutically acceptable compositions comprising the crystalline forms and methods of using said compositions in the treatment of various disorders.本發明係關於8-(2-氟苯甲基)-6-(3-(三氟甲基)-1H-1,2,4-三唑-5-基)咪唑并[1,2-a]吡嗪之晶型,其可用作可溶性鳥苷酸環化酶(sGC)之刺激劑。本發明亦提供包含該等晶型之醫藥學上可接受之組合物,及使用該等組合物治療各種病症之方法。