Form II ampicillin
AssigneeBristol-Myers Company
InventorsHerbert H. Silvestri, David A. Johnson
Life of this patent
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Abstract
1. A new crystalline form of D-6-(2-amino-2-phenyl-acetamido)penicillanic acid characterized by being substantially free of water in the chemically bound state, having a molecular weight of about 349, having an infrared spectrograph as disclosed in FIG. 1 of the drawings, and possessing substantially greater storage stability than hydrated crystalline D-6-(2-amino-2-phenyl-acetamido)penicillanic acid.
Claims2
A new crystalline form of D-6-(2-amino-2-phenyl-acetamido)penicillanic acid characterized by being substantially free of water in the chemically bound state, having a molecular weight of about 349, having an infrared spectrograph as disclosed in FIG. 1 of the drawings, and possessing substantially greater storage stability than hydrated crystalline D-6-(2-amino-2-phenyl-acetamido)penicillanic acid.
The stable crystalline form of D-(-)-.alpha.-aminobenzylpenicillin which is characterized by being substantially free of water in the chemically bound state, and by exhibiting an infrared absorption spectrum substantially as disclosed in FIG. 1 of the drawings.
Dependencies are inferred from the claim text.