Talk:Urobilinogen

WikiProject class rating
This article was automatically assessed because at least one WikiProject had rated the article as stub, and the rating on other projects was brought up to Stub class. BetacommandBot 07:54, 10 November 2007 (UTC)

Claim that the molecule graphic is incorrect
About a week ago, an IP address made the claim within the article that the graphic of the molecule is incorrect. I reverted that change and advised the editor to bring the concern here to the talk page. However, maybe someone watching this page and more knowledgeable in the subject can see what the problem is, if any, until the IP responds here (assuming he or she does). Cheers, Northumbrian (talk) 01:31, 5 July 2011 (UTC)
 * The structure is correct just displayed oddly. There is a newer linear SVG version called File:D-Urobilinogen.svg. I think the confusing part it sound like its is a bilin (C10 is double bonded) but it is a bilane) maybe? I am not sure if C3 and C18 are ethyls and not vinyls. --Squidonius (talk) 06:13, 5 July 2011 (UTC)

Nomenclature and enantiomers and conflicting primary sources, oh my
Currently as of 6/24/2019, the nomenclature section is a copy + paste of the Human Metabolome Project's information on urobilinogen, here: http://www.hmdb.ca/metabolites/HMDB0004158. It states that the physiological urobilinogen is D-urobilinogen, and it's further converted down to i-urobilinogen (mesobilinogen) or L-urobilinogen (stercobilinogen). This is mildly conflicting with PubChem, which lists physiological urobilinogen as a synonym of i-urobilinogen (mesobilinogen), here: https://pubchem.ncbi.nlm.nih.gov/compound/26818. PubChem has a separate listing for D-urobilinogen and does not list that as synonymous with plain ole' "urobilinogen."

The only reason I'm concerned about this is that stercobilinogen is purportedly identical to urobilinogen in terms of human physiology; they differ by excretion location in the body, and this can be confusing to medical students wondering why two different compounds result from an extremely similar (ie identical) reduction step. But I haven't readily found sources that support that claim, and while two extremely similar compounds may be physiologically synonymous, I wouldn't want to make so bold of a claim as to say they're identical without being sure.

Any biochemists/physiologists around? Emma a goldman (talk) 18:15, 24 June 2019 (UTC)

What is a normal range? 47.214.172.243 (talk) 23:22, 1 April 2024 (UTC)