Dragon

Dragon is an application for the calculation of molecular descriptors. These descriptors can be used to evaluate molecular structure-activity or structure-property relationships, as well as for similarity analysis and highthroughput screening of molecule databases.

Dragon has been designed to work both for Windows and Linux. There are two versions for Windows, Dragon Professional, which can only work in stand-alone mode and Dragon Plus, which can work both in stand-alone and background mode. For Linux there only is one version, called dragonX, which works in background mode by a command line. Read what's new in the latest release of Dragon.

Dragon calculates 3224 molecular descriptors (see here the descriptor list). The user can calculate not only the simplest atom type, functional group and fragment counts, but also several topological and geometrical descriptors. Some molecular properties are also calculated by using some common models taken from the literature. Moreover, the Lipinski's alert together with some drug-like indices are provided.

Have a look at the main Dragon features and at the system requirements.

Characteristics
Dragon version
  Windows Linux
  EVAL PROF PLUS dragonX

No. molecular descriptors

3,224 3,224 3,224 3,224

No. molecules per batch

50

50,000

50,000

unlimited1

No. atoms per molecule (H included)

50

1000

1000

unlimited1

No. user-defined variables

6

100

100

100

No. classes per categorical variable

20

20

20

20

No. molecular descriptor blocks

22

22

22

22

Statistics, graphics and correlation analysis yes

yes

yes

no

Result saving

no

yes

yes

yes

Batch mode (* only batch mode)

no

no

yes

yes*

Extended manual no yes yes yes
1) currently tested until to 250,251 molecules (NCI database) and 800 atoms per molecule.