The common name dictionary has been significantly updated and extended with 30 thousand new names and synonyms.
Some CAS Registry Number lookups were incorrectly cached in version 18.30.
The common names of 5 thousand herbicides and pesticides are now included in the dictionary.
Names containing a 'dehydro' corresponding to a triple bond are now supported.
Longer common names are now supported.
CAS Registry Numbers with invalid check digits are now reported as errors with a specific error message. This happens in particular for CAS Numbers which have been entered with a typo.
The common name dictionary is extended to include INCI names (International Nomenclature of Cosmetic Ingredients).
Some nucleosides and nucleotides had incorrect stereochemistry.
CAS number conversion was failing since version 17.9 in .NET 32 bit applications.
More ASCII syntaxes are supported for superscript numbers in bridged ring system names.
Ring fusions involving multiple bonds are now supported.
Capital S- is now understood as sym- where appropriate.
Names with added space characters are better recognized.
More disconnected structures are now supported, for instance pyridine acetate.
Names separated by ';' were not detected from arbitrary text formats. This affected in particular JChem for Excel.
Some element names were wrongly detected and represented as structures.
The support for functional groups containing Selenium and Tellurium atoms has been improved.
Support has been added for more cases of accidental spaces in name (often caused by OCR), such as "m ethyl".
Additional OCR error correction allows to convert more names from scanned documents and patents.
Spiro names that mistakenly lack a prime on the second spiro atom locant are now automatically fixed.
Several improvements increase the conversion of systematic names.
Names with small typographical errors, such as added spaces or missing dashes, are better supported. This especially improves the extraction of names from lower quality sources, such as patent texts generated by OCR.
Some lists of names improperly separated lead to extremely long processing time.
OCR error correction is improved.
Lowercase d- and l- stereo-descriptors are now interpreted as D- and L-, since names are sometimes (wrongly) converted to all lowercase. This is correct most of the time since the old usage of d- and l- for optical activity (dextrorotatory and levorotatory) is out of use and replaced by (+) and (-).
Names with (r) and (s) pseudo-asymmetric stereo centers are now fully supported.
Chinese name to structure coverage was improved by about 3 percentage points.
Some names designating multiplied fused systems failed to be converted.
Some names referring to the locant of spiro atoms were failing to be converted to structure or were missing stereochemistry on those atoms.
Some partially saturated polyacenes and polyaphenes were not supported.
Some Chinese and Japanese chemical names with punctuation characters were were not supported by the automatic format recognizer.
Some substituents separated by a space from an acid parent were wrongly interpreted as esters.
The naming webservice was not working in the applet.