TY  - GEN
AU  - Lichter,R L
AU  - Dorman,D E
TI  - Letter: Organic structure characterization by natural-abundance nitrogen-15 nuclear magnetic resonance spectroscopy. Penicillin and cephalosporin derivatives
SN  - 0022-3263
PY  - 1976///0315
KW  - Cephalosporins
KW  - Magnetic Resonance Spectroscopy
KW  - methods
KW  - Penicillins
N1  - Publication Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S
UR  - https://doi.org/10.1021/jo00865a047
ER  -