Crystal form of...

Details Crystal form of... Crystal form of...

2001-01-19

2003-04-22

Lambkin, Deborah C. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

06552202

ABSTRACT:

The invention relates to a novel readily soluble crystal modification (hereafter referred to as “the first crystal modification”) of the compound of formula I
in which the transmission X-ray diffraction pattern obtained with a focusing Debye-Scherrer beam and Cu—K
&agr;1
-radiation, has lines at the following diffraction angles 2&thgr;:
Lines of strong intensity: 10.65; 14.20; 14.80; 16.10; 21.70; 23.15; 24.40; 24.85; 25.50:; 25.85; 26.90; and 29.85 degrees,
Lines of medium intensity: 7.40; 9.80; 13.10; 15.45; 16.80; 20.70; 21.45; 22.80; 23.85; 27.25; and 28.95 degrees,


REFERENCES:
patent: 6096770 (2000-08-01), Lennox et al.
patent: 6288098 (2001-09-01), Bartlett
patent: 6303792 (2001-10-01), Lau et al.
patent: 6306886 (2001-10-01), Maurin et al.
patent: 6316479 (2001-11-01), McMahon et al.

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