Structure via PubChem · Public domain (PubChem)
ecamsule
Sign in to saveAlso known as Terephthalylidene dicamphor sulfonic acid, mexoryl
Ecamsule (USAN, trade name Mexoryl SX, INCI terephthalylidene dicamphor sulfonic acid) is an organic compound which is added to many sunscreens to filter out UVA rays. It is a benzylidene camphor derivative, many of which are known for their excellent photostability.
Chemical data
- Formula
- C28H34O8S2
- Molecular weight
- 562.7 g/mol
- IUPAC name
- [(3Z)-3-[[4-[(Z)-[7,7-dimethyl-3-oxo-4-(sulfomethyl)-2-bicyclo[2.2.1]heptanylidene]methyl]phenyl]methylidene]-7,7-dimethyl-2-oxo-1-bicyclo[2.2.1]heptanyl]methanesulfonic acid
- SMILES
- CC1(C2(C(=O)/C(=C\C3=CC=C(C=C3)/C=C/4\C(=O)C5(C(C4CC5)(C)C)CS(=O)(=O)O)/C1CC2)CS(=O)(=O)O)C
- InChIKey
- HEAHZSUCFKFERC-AXPXABNXSA-N
- XLogP
- 3.1
- Polar surface area
- 160 Ų
- H-bond donors
- 2
- H-bond acceptors
- 8
- Formal charge
- 0
via PubChem
Wikidata facts
- Subclass of
- chemical compound
- Mass
- 562.16951
Show 4 more facts
- chemical formula
- C₂₈H₃₄O₈S₂
- isomeric SMILES
- CC1(C2(C(=O)/C(=C\C3=CC=C(C=C3)/C=C/4\C(=O)C5(C(C4CC5)(C)C)CS(=O)(=O)O)/C1CC2)CS(=O)(=O)O)C
- canonical SMILES
- CC1(C2CCC1(C(=O)C2=CC3=CC=C(C=C3)C=C4C5CCC(C4=O)(C5(C)C)CS(=O)(=O)O)CS(=O)(=O)O)C
- Commons category
- Ecamsule
via Wikidata · CC0
~3 min read
Encyclopedic overview
7 sectionsContents
- Mode of action
- Efficacy
- Safety
- Availability
- See also
- References
- External links
Ecamsule (USAN, trade name Mexoryl SX, INCI terephthalylidene dicamphor sulfonic acid) is an organic compound which is added to many sunscreens to filter out UVA rays. It is a benzylidene camphor derivative, many of which are known for their excellent photostability.
==Mode of action== Exposed to UV, ecamsule undergoes reversible photoisomerization, followed by photoexcitation. The absorbed UV is then released as thermal energy, without penetrating the skin.
Excerpted from Wikipedia’s “ecamsule” article, available under the CC BY-SA 4.0 licence.