Cefbuperazone crystalline triethylamine salt
AssigneeBristol-Myers Company
InventorsMurray A. Kaplan, Robert A. Lipper
Life of this patent
Estimating the term…
Abstract
The crystalline triethylamine salt of cefbuperazone is stable in the dry state and soluble in water and in aqueous injection vehicles.
Claims1
The crystalline triethylamine salt of cefbuperazone which exhibits mp 160.degree.-163.degree. C., has the elemental composition corresponding to the formula C.sub.22 H.sub.29 N.sub.9 O.sub.9 S.sub.2.C.sub.6 H.sub.15 N and exhibits substantially the X-Ray powder diffraction pattern described below determined with a Rigaku X-Ray Powder Diffractometer operated with a Cu 25 kv lamp and a nickel filter at a scan rate of 2.degree. per minute over the range of from 40.degree. to 5.degree..
- ______________________________________ Estimated d-Spacing (.ANG.) Relative Intensity (%) ______________________________________ 9.2 66.7 8.18 14.3 6.96 33.3 6.70 55.6 5.70 17.5 4.82 63.5 4.07 100.0 3.97 27.0 3.67 14.3 3.63 15.9 3.24 17.5 ______________________________________
Dependencies are inferred from the claim text.