User talk:Ld99

Levobupivacaine

Thanks for the heads up. I checked the structure and it does appear to be correct according to PubChem and the IUPAC name function in ChemDraw. The image in the PI is indeed a mirror image, meaning that the bond changes from "pointing out" (as in the PI) to "pointing in" (as in this image) without changing chirality. -Techelf 12:49, 18 May 2006 (UTC)[reply]

The representation of stereochemistry in structural diagrams can be a bit confusing sometimes. The convention is that solid "wedges" point out of the page, and dashed "wedges" point into the page. The "direction" of the wedge indicates the position of the chiral centre – the broad end is the end further away from the chiral centre. For example, morphine has substituents pointing in and out of the page. -Techelf 08:25, 24 May 2006 (UTC)[reply]

Proposed Image Deletion

A deletion discussion has just been created at Category talk:Unclassified Chemical Structures, which may involve one or more orphaned chemical structures, that has you user name in the upload history. Please feel free to add your comments. Ronhjones ^(Talk) 22:57, 10 June 2011 (UTC)[reply]

All files in category Unclassified Chemical Structures listed for deletion

One or more of the files that you uploaded or altered has been listed at Wikipedia:Files for deletion. Please see the discussion to see why this is (you may have to search for the title of the image to find its entry), if you are interested in it/them not being deleted. Thank you.

Delivered by MessageDeliveryBot on behalf of MGA73 (talk) at 18:06, 28 November 2011 (UTC).[reply]