Is 9-Octadecenoic Acid (9Z)-, Methyl-2-Sulfoester, Sodium Salt vegan?

Sodium Oleyl Methyl Isethionate is also known as 9-Octadecenoic Acid (9Z)-, Methyl-2-Sulfoester, Sodium Salt.

Sodium Oleyl Methyl Isethionate is an anionic surfactant derived from oleic acid and isethionic acid, used as a mild cleansing agent. Oleic acid may be sourced from plant oils or animal fats, making the origin uncertain.

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