Synthesis of disodium D (‐)‐6‐(2‐phenyl‐2‐sulfoacetamido‐1‐14C) penicillanate (sulfocillln‐14C) and 6‐(2‐isobutyl‐β,γ‐3H2‐sulfo‐2‐phenylacetamido‐1‐14C) penicillanic acid (SP‐421‐3H, 14C)

Abstract
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