EUOS25 Challenge Data

The Challenge data were collected from the screening dataset of ca 100k compounds, which was split into training, leaderboard and blind sets.
The datasets (SMILES and activity for the training set) can be downloaded from these links:

Training set:
euos25_challenge_train_transmittance340.csv
euos25_challenge_train_transmittance450.csv
euos25_challenge_train_fluorescence340_450.csv
euos25_challenge_train_fluorescence480.csv

Leaderboard set:
euos_challenge_2025_leaderboard.csv with activity data

Blind set:
euos_challenge_2025_blind.csv with activity data

They are also available as OCHEM baskets:
Training set transmittance at 340nm
Training set transmittance at >450nm
Training set fluorescence at 340_450nm
Training set fluorescence at >480nm
Test set without activity data

Extended data with information about plates, wells and Transmittance % are also available
euos25_challenge_train_transmittance340_extended.csv
euos25_challenge_train_transmittance450_extended.csv
euos25_challenge_train_fluorescence340_450_extended.csv
euos25_challenge_train_fluorescence480_extended.csv

You can use these sets to develop and test models directly within OCHEM or/and calculate and export descriptors for external model development.