Ralph R. Pfeiffer

Solid-State Pharmaceutical Chemistry

S.R. Byrn, Ralph R. Pfeiffer, Gregory A. Stephenson et al. · Chemistry of Materials · 1994 · 158 citations

Medicinal Chemistry, Molecular Sciences, Chemical Measurement +14

Solid-State Investigations of Erythromycin A Dihydrate: Structure, NMR Spectroscopy, and Hygroscopicity

Gregory A. StephensonX, Oseph G. Stowell, Pascal H. Toma et al. · Journal of Pharmaceutical Sciences · 1997 · 95 citations

Substituent effects upon the base hydrolysis of penicillins and cephalosporins. Competitive intramolecular nucleophilic amino attack in cephalosporins

Joseph M. Indelicato, T. T. NORVILAS, Ralph R. Pfeiffer et al. · Journal of Medicinal Chemistry · 1974 · 81 citations

Bioorganic Chemistry, Altmetric Attention Score, Antimicrobial Chemotherapy +17

Crystal Pseudopolymorphism of Cephaloglycin and Cephalexin

Ralph R. Pfeiffer, Kuisheng Yang, Mary Ann Tucker · Journal of Pharmaceutical Sciences · 1970 · 73 citations

Crystal Structure, Bioorganic Chemistry, Biochemistry +7

Stabilization of a Metastable Polymorph of 4-Methyl-2-nitroacetanilide by Isomorphic Additives

Xiaorong He, Joseph G. Stowell, Kenneth R. Morris et al. · Crystal Growth & Design · 2001 · 53 citations

Materials Science, Novel Organocatalysts, Enantioselective Synthesis +13