RETRIEVAL/SEARCH:

THOR:

Lookup by exact reaction.

Lookup by molecule as Reactant, Product, Agent.

Lookup a reaction by both reactant(s) and product(s). That is, find all reactions with molecule(s) as reactant and with molecule(s) as product.

Merlin:

Super/sub-structure searches (atom-map used if available).

Reaction, molecule similarity.

'Treeserver':

There are additional searches which one wants to perform. They include:
• searches across multi-step reaction sequences,
• synthetic feasibility searches.