Is Hydroxy Tetramethylpiperidine Oxide vegan?
Hydroxy Tetramethylpiperidine Oxide
Hydroxy Tetramethylpiperidine Oxide, commonly known as TEMPO or 4-Hydroxy-TEMPO, is a stable synthetic aminoxyl (nitroxide) radical compound used as a chemical reagent and, in cosmetics, as an antioxidant or stabilizing agent.
| Also known as | 1-Oxyl-2,2,6,6-tetramethyl-4-hydroxypiperidine, 1-Piperidinyloxy, 4-hydroxy-2,2,6,6-tetramethyl-, 1-λ1-Oxidanyl-2,2,6,6-tetramethylpiperidin-4-ol 2,2,6,6-tetramethylpiperidine-1,4-diol, 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy, 4-Hydroxy-2,2,6,6-tetramethylpiperidine 1-Oxyl Free Radical, 4-Hydroxy-2,2,6,6-tetramethylpiperidinoxy, 4-Hydroxy-2,2,6,6-tetramethylpiperidinoxyl, 4-HYDROXY-2,2,6,6-TETRAMETHYLPIPERIDINOXYL-, 4-Hydroxy-TEMPO, HTMPO, Hydroxy Tempo |
|---|---|
| INCI name | Hydroxy Tetramethylpiperidine Oxide |
| CAS number | 2564-83-2 |
| EC number | 218-760-9 |
| CosIng ID | 96746 |
| Last reviewed | 4 July 2026 |
An ingredient is considered vegan if it contains no animal-derived components at any point in its production.
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