Info-Mac

Download: http://archive.info-mac.org/sci/chemletter.hqx

ChemLetter0.61E is freeware formula structure's editor using text
character.

As a matter of course, this application is hardly to write complicated
structure. However, I think that you can conveniently use this
application, when you send e-mail including chemical structures and
discuss about chemical compounds on newsgroups.

System requirements:
*System 7.1
*Power Macintosh or 68020 processor

For more information, please read the manual enclosed.

Thanks,

Hiroki Kubota