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US 6,187,921 B1Granted
2-amino-6-chloropurine and method for preparing the same
AssigneeSumika Fine Chemicals Co., Ltd.
InventorsMasatoshi Sakai, Masaki Fujiwara, Toshio Nakamatsu
Life of this patent
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Abstract
2-Amino-6-chloropurine having a double cone-like crystal form.
Claims2
2-amino-6-chloropurine having a double cone-like crystal form constructed by combining two pyramids with each other at their bottoms and having an average particle diameter of 60 to 66 μm.
Dependencies are inferred from the claim text.