ChemInform Abstract: CARBON-13 NUCLEAR MAGNETIC RESONANCE OF N-HETEROCYCLES. PART 3. CARBON-13 CHEMICAL SHIFT ASSIGNMENTS OF THE CARBONYL GROUPS IN PENICILLINS AND CEPHALOSPORINS
1977 ◽
pp. 1749
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1987 ◽
Vol 25
(6)
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pp. 474-479
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1980 ◽
Vol 45
(13)
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pp. 2672-2675
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1974 ◽
Vol 96
(14)
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pp. 4404-4410
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