:Iminosuccinic acid

{{Chembox

| ImageFile = Iminoaspartic acid.svg

| ImageSize =

| ImageAlt =

| IUPACName = 2-Iminobutanedioic acid

| OtherNames = Iminoaspartic acid; 2-iminobutanedioic acid, iminosuccinate, alpha-iminosuccinate, iminosuccinic acid

| Section1 = {{Chembox Identifiers

| CASNo = 79067-61-1

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = QHW8YF5XND

| PubChem = 796

| SMILES = C(C(=N)C(=O)O)C(=O)O

| ChemSpiderID = 13628208

| InChI = 1/C4H5NO4/c5-2(4(8)9)1-3(6)7/h5H,1H2,(H,6,7)(H,8,9)

| InChIKey = NMUOATVLLQEYHI-UHFFFAOYAF

| StdInChI = 1S/C4H5NO4/c5-2(4(8)9)1-3(6)7/h5H,1H2,(H,6,7)(H,8,9)

| StdInChIKey = NMUOATVLLQEYHI-UHFFFAOYSA-N

| RTECS =

| MeSHName =

| ChEBI = 50616

| KEGG = C05840

}}

| Section2 = {{Chembox Properties

| C=4|H=5|N=1|O=4

| MolarMass =

| Appearance =

| Density =

| MeltingPt =

| BoilingPt =

| Solubility =

}}

| Section3 = {{Chembox Hazards

| MainHazards =

| FlashPt =

| AutoignitionPt =

}}

}}

Iminoaspartic acid (also known as iminosuccinate or iminoaspartate) is a dicarboxylic acid in the biosynthesis of nicotinic acid. It is synthesised by the oxidation of aspartate and is condensed by quinolinate synthase with glycerone phosphate to form quinolinic acid.{{cite journal | title = Quinolinate synthetase, an iron-sulfur enzyme in NAD biosynthesis |author = Ollagnier-de Choudens, S., Loiseau, L., Sanakis, Y., Barras, F. and Fontecave, M. |journal = FEBS Lett. |year = 2005 |volume = 579 |pages = 3737–3743 |pmid = 15967443 | doi = 10.1016/j.febslet.2005.05.065 | issue = 17|url = https://hal.archives-ouvertes.fr/hal-00374522/file/NadAFEBS2.pdf |doi-access = free }}