Redirect to:

This page is a redirect. The following categories are used to track and monitor this redirect:

From a page move: This is a redirect from a page that has been moved (renamed). This page was kept as a redirect to avoid breaking links, both internal and external, that may have been made to the old page name.

From an alternative spelling: This is a redirect from a title with an alternative spelling of the target name. Pages that link to this redirect may be updated to link directly to the target page if that results in an improvement of the text. Do not "fix" such links if they are not broken. Also, these links should not be replaced with piped links.
- There are many more specific templates such as {{R from alternative hyphenation}}, {{R from alternative punctuation}} and {{R from alternative spacing}}. Also see subcategories of Category:Redirects from modifications for other options (capitals, abbreviations, diacritics, plurals, stylizations, transliteration, ligatures, different parts of speech, etc.)

When appropriate, protection levels are automatically sensed, described and categorized.

List of compounds with carbon numbers 40-49