User talk:121.220.202.81

November 2011
Hello, and welcome! Although everyone is welcome to contribute, at least one of your recent edits, such as the one you made to Riboflavin with this edit, did not appear to be constructive, and has been reverted or removed. Thank you!  Tide  rolls  03:26, 19 November 2011 (UTC)

Please refrain from making unconstructive edits to Wikipedia, as you did at Riboflavin with this edit. Your edits appear to constitute vandalism and have been reverted or removed. If you would like to experiment, please use the sandbox. Thank you.  Tide  rolls  03:28, 19 November 2011 (UTC)