Claim: DIAD is the diisopropyl ester of azodicarboxylic mineral which serves as an oxidizer of triphenylphosphine to triphenylphosphine oxide and as a selective deprotectant of N-benzyl groups in the presence of other protecting groups.
Evidence: Diisopropyl azodicarboxylate (DIAD) is the diisopropyl ester of azodicarboxylic acid.