There is an ongoing outage on the primary CPAN mirror. It is possible to work around the issue by using MetaCPAN as a mirror.

Changes for version 0.12.0 - 2025-04-25

  • Ceasing to output aromatic bonds, excess parentheses and explicit hydrogen atoms by default. These features can be re-enabled by writer options.
  • Reusing ring bond numbers immediately after their closure. The old behavior can be brought back via an option.

Modules

OpenSMILES format reader and writer
Aromaticity handling routines
OpenSMILES format writer

Provides

in lib/Chemistry/OpenSMILES/Stereo.pm
in lib/Chemistry/OpenSMILES/Stereo/Tables.pm