The jcunique utility is a command-line tool of JChem chemical structure filtering. It performs duplicate filtering on all the specified input molecules. These molecules can be specified as standard inputs, filenames, SMARTS/SMILES strings, or database tables. The jcunique utility supports a number of different molecular file formats, and manages multiple input sources. The output of a jcunique run is the union of unique molecules.
Note : If you need to perform chemical structure search , use our jcsearch utility.
The program should be invoked in one of the following forms:
    jcunique [options] [files...] 
    jcunique [options] DB:[table name]
    jcunique [options] [smiles1 smiles2 ... smiles(n)]
or  jcunique [options] [files...] DB:[table name]With no file, or when file is -, it reads the standard input. When DB is specified, filtering is done in the database table, using connection information saved by other JChem programs (e.g., jcman).
Options:
-f format  output format (default: smiles). 
-o file    write output to file. Unless it specified, standard output is used.Filters duplicates among SMILES defined molecules, and sends the unique molecules to the standard output in SMILES format:
    jcunique "CCC" "CCCC" "CCC=C" "CCC" "CCCCC" "CCCC"Output:
    CCC
    CCCC
    CCC=C
    CCCCCFilters duplicate molecules of different mrv files, and writes the result to the standard output in SMILES format:
 jcunique test1.mrv test2.mrv test3.mrv test4.mrvFilters duplicate molecules in a database table, and writes the result into a file:
 jcunique DB:demo1 -f sdf -o output.sdfFilters duplicate molecules of different input types; the output format is sdf, and displays the result in MarvinView:
 jcunique "CC(O)=O" DB:demo1 test1.mrv -f sdf |mview -