:Birnbaumins

{{Chembox

| ImageFile = Birnbaumin A.svg

| ImageSize = 200px

| ImageCaption = Birnbaumin A

| ImageFile1 = Birnbaumin B.svg

| ImageSize1 = 200px

| ImageCaption1 = Birnbaumin B

| IUPACName =

| OtherNames =

| Section1 = {{Chembox Identifiers

| index1_label = A

| index2_label = B

| CASNo1 = 858648-32-5

| CASNo2 = 858648-33-6

| CASNo1_Ref = {{Cascite|changed|EPA}}

| CASNo2_Ref = {{Cascite|changed|EPA}}

| DTXSID1 = DTXSID301046010

| DTXSID2 = DTXSID001046011

| PubChem1 = 136734815

| PubChem2 = 136734816

| InChI2=1S/C16H20N6O5/c17-14(15(18)21-26)19-6-1-2-7-20-16(25)13(24)10-8-22(27)12-9(10)4-3-5-11(12)23/h3-5,8,19,23,27H,1-2,6-7,17-18H2,(H,20,25)

| InChIKey2 = FLACAKNDCLFMEK-UHFFFAOYSA-N

| InChI1=1S/C16H20N6O4/c17-14(15(18)21-25)19-7-3-4-8-20-16(24)13(23)11-9-22(26)12-6-2-1-5-10(11)12/h1-2,5-6,9,19,26H,3-4,7-8,17-18H2,(H,20,24)

| InChIKey1 = BTVKTPDEMYHRTI-UHFFFAOYSA-N

| SMILES1 = C1=CC=C2C(=C1)C(=CN2O)C(=O)C(=O)NCCCCNC(=C(N)N=O)N

| SMILES2 = C1=CC2=C(C(=C1)O)N(C=C2C(=O)C(=O)NCCCCNC(=C(N)N=O)N)O

}}

| Section2 = {{Chembox Properties

| Formula = C₁₆H₂₀N₆O₄ (A)
C₁₆H₂₀N₆O₅ (B)

| MolarMass =

| Appearance =

| Density =

| MeltingPt =

| BoilingPt =

| Solubility =

}}

| Section3 = {{Chembox Hazards

| MainHazards = Toxic if ingested

| FlashPt =

| AutoignitionPt =

}}

}}

Birnbaumins are a pair of alkaloids and toxic yellow pigment compounds first isolated from the flowerpot parasol mushroom.{{cite journal | title = Birnbaumin A and B: Two Unusual 1-Hydroxyindole Pigments from the "Flower Pot Parasol" Leucocoprinus birnbaumii |author1=Andrea Bartsch |author2=Monika Bross |author3=Peter Spiteller |author4=Michael Spiteller |author5=Wolfgang Steglich |name-list-style=amp | doi =10.1002/anie.200500082 | date = 7 April 2005 | volume =44 | issue =19 | pages =2957–2959 | pmid=15818629 | journal=Angew Chem Int Ed Engl| doi-access=free }} These toxins can cause gastric ulcers if consumed.{{citation needed|date=December 2016}}