TY - GEN AU - Bortesi,F AU - Cavalli,S AU - Mangia,A TI - Preparation, identification, and quantitative NMR determination of silyl derivatives of 6-aminopenicillanic acid, 7-amino-3-methyl-delta3-cephem-4-carboxylic acid, and 7-amino-3-acetoxymethyl-delta3-cephem-4-carboxylic acid SN - 0022-3549 PY - 1978///0127 KW - Cephalosporins KW - analysis KW - Isomerism KW - Magnetic Resonance Spectroscopy KW - Penicillanic Acid KW - Trimethylsilyl Compounds N1 - Publication Type: Journal Article UR - https://doi.org/10.1002/jps.2600661230 ER -