# C4-5 CYANOACETATE/DI-C4-5 MALONATE ANTHRACENEDIYLIDENE/FLUORENYLIDENE/THIOXANTHENEYLIDENE

URL: https://app.greenveil.ai/ingredients/ingredient_inci_c4_5_cyanoacetate_di_c4_5_malonate_anthracenediylidene_fluorenylidene_thioxantheneylidene
Categories: beauty
Functions: Skin conditioning, Light stabilizer
Identifier: C4-5 CYANOACETATE/DI-C4-5 MALONATE ANTHRACENEDIYLIDENE/FLUORENYLIDENE/THIOXANTHENEYLIDENE

> C4-5 CYANOACETATE/DI-C4-5 MALONATE ANTHRACENEDIYLIDENE/FLUORENYLIDENE/THIOXANTHENEYLIDENE: Used in cosmetics as a skin-conditioning agent and a light stabiliser. Canonical ingredient record built from 1 public-source records. Compiled from 1 published data source.

## Safety assessment

- Chemical concern: not yet assessed
- Is it a concern? We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.
- Rationale: Canonical ingredient record built from 1 public-source records.

## Regulatory status

- EU: Active — C4-5 Cyanoacetate/Di-C4-5 Malonate Anthracenediylidene/Fluorenylidene/Thioxantheneylidene is the complex mixture of tricyclic esters formed by the reaction of a mixture of Anthraquinone, Thioxanthone and Fluorenone, with a mixture of C4-5 cyanoacetate and C4-5 malonate.

## Expert safety opinions

- SCCS (EU Scientific Committee on Consumer Safety): no opinion on file.
- CIR (Cosmetic Ingredient Review (US expert panel)): no opinion on file.

## Data sources

- CosIng (updated 2026-09-23): https://ec.europa.eu/growth/tools-databases/cosing/details/97309

_Assessed by Greenveil._