index

Searching the Derwent Compound Number Field

Searches the Derwent Compound Number field within a patent record. Enter one or more numbers connected with search operators.

Derwent Compound Numbers (DCN) are Merged Markush Service (MMS) Compound Numbers for specific compound entries in the MMS database on Questel.Orbit. MMS compound number indexing is available in Derwent WPI on all Hosts from 1987 onwards for patents classified in:

Sections B (Pharmaceuticals);
Section C (Agrochemicals); and/or
Section E (General Chemicals).

index

Search Examples

R00247
R07345
R07391