Is 4-Piperidinecarboxylic acid, 1-methyl-4-phenyl-, 1-methylethyl ester vegan?

Properidine is also known as 4-Piperidinecarboxylic acid, 1-methyl-4-phenyl-, 1-methylethyl ester.

Properidine is a synthetic opioid analgesic and the isopropyl ester analogue of pethidine, classified as a controlled narcotic substance.

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