Q12 · CSIR-NET Chemistry, December 2012
Paper: CSIR-NET December 2012 · Subject: Organic Chemistry · Chapter: Natural Products · Topic: Natural Products – General · Marks: 2 · Difficulty: Hard
Degradation of penicillin $G$ gives penicillamine that can utilize nitrogen, oxygen or sulfur atoms as donors to bind with lead (II), mercury (II) or copper(II). The structure of penicillamine is 
(a)
(b)
(c)
(d)
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
Penicillamine is β,β-dimethylcysteine, HS–C(CH₃)₂–CH(NH₂)–COOH (a) — the thiazolidine half of penicillin freed by hydrolysis.
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