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Gefitinib n-oxide

3,4-Difluoro gefitinib

Desfluoro gefitinib

Imatinib para-diaminomethylbenzene

Lercanidipine 5-desmethyl-5-propyl ester

Lercanidipine impurity a

Levocarnitine ep impurity c

Empagliflozin (r)-isomer

Empagliflozin impurity 4

Empagliflozin impurity 7