Orotidine 5′-monophosphate

Orotidine 5′-monophosphate (OMP), also known as orotidylic acid, is a pyrimidine nucleotide^[1] which is the last intermediate in the biosynthesis of uridine monophosphate.^[2] OMP is formed from orotate and phosphoribosyl pyrophosphate by the enzyme orotate phosphoribosyltransferase.

Orotidine 5′-monophosphate

Names
IUPAC name 2,6-Dioxo-3-(5-O-phosphono-β-D-ribofuranosyl)-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid
Systematic IUPAC name 3-{(2R,3R,4S,5R)-3,4-Dihydroxy-6-[(phosphonooxy)methyl]oxolan-2-yl}-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid
Other names Orotidylic acid, OMP
Identifiers
CAS Number	2149-82-8 Y
3D model (JSmol)	Interactive image
ChemSpider	141140 N
MeSH	Orotidine+5'-monophosphate
PubChem CID	160617
UNII	H0ARN8U4Y9 Y
CompTox Dashboard (EPA)	DTXSID40944090
InChI InChI=1S/C10H13N2O11P/c13-5-1-3(9(16)17)12(10(18)11-5)8-7(15)6(14)4(23-8)2-22-24(19,20)21/h1,4,6-8,14-15H,2H2,(H,16,17)(H,11,13,18)(H2,19,20,21)/t4-,6-,7-,8-/m1/s1 N Key: KYOBSHFOBAOFBF-XVFCMESISA-N N InChI=1/C10H13N2O11P/c13-5-1-3(9(16)17)12(10(18)11-5)8-7(15)6(14)4(23-8)2-22-24(19,20)21/h1,4,6-8,14-15H,2H2,(H,16,17)(H,11,13,18)(H2,19,20,21)/t4-,6-,7-,8-/m1/s1 Key: KYOBSHFOBAOFBF-XVFCMESIBC
SMILES c1c(n(c(=O)nc1O)[C@H]2[C@@H]([C@@H]([C@H](O2)COP(=O)(O)O)O)O)C(=O)O
Properties
Chemical formula	C10H13N2O11P
Molar mass	368.191 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

In humans, the enzyme UMP synthase converts OMP into uridine 5′-monophosphate.^[2] If UMP synthase is defective, orotic aciduria can result.^[2]