Organic compounds -- part of the class 532-570 series – Organic compounds – Chalcogen bonded directly to ring carbon of the purine ring...
Reexamination Certificate
2003-04-03
2008-03-18
Berch, Mark L. (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Chalcogen bonded directly to ring carbon of the purine ring...
Reexamination Certificate
active
07345170
ABSTRACT:
The present invention can provide a solvate, a cubic crystal and a columnar crystal of 2-amino-6-benzyloxypurine by crystallization from (1) a solvent containing at least one kind of solvent selected from the group consisting of alcohol and water, (2) alcohol or (3) a water-containing solvent.
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Hayashi Taketo
Iwanaga Yoshihiko
Kawakami Takehiko
Watanabe Yosuke
Berch Mark L.
Leydig , Voit & Mayer, Ltd.
Sumitomo Chemical Company Limited
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