:Rubixanthin

{{chembox

| Verifiedfields = changed

| Watchedfields = changed

| verifiedrevid = 427861501

| Reference =Merck Index, 11th Edition, 8265.

| ImageFile =Rubixanthin.png

| ImageSize =250px

| ImageFile1 = Rubixanthin 3D.png

| IUPACName = (3R)-β,ψ-Caroten-3-ol

| SystematicName = (1R)-4-[(1E,3E,5E,7E,9E,11E,13E,15E,17E,19E)-3,7,12,16,20,24-Hexamethylpentacosa-1,3,5,7,9,11,13,15,17,19,23-undecaen-1-yl]-3,5,5-trimethylcyclohex-3-en-1-ol

| OtherNames = {{ubl|Natural yellow 27|E161d}}

|Section1={{Chembox Identifiers

| CASNo_Ref = {{cascite|correct|??}}

| CASNo =3763-55-1

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

| UNII = 0PWJ89032Q

| PubChem =5281252

| ChEBI_Ref = {{ebicite|changed|EBI}}

| ChEBI = 8907

| SMILES =CC1=C(C(C[C@@H](C1)O)(C)C)\C=C\C(=C\C=C\C(=C\C=C\C=C(/C)\C=C\C=C(/C)\C=C\C=C(/C)\CCC=C(C)C)\C)\C

| StdInChI_Ref = {{stdinchicite|changed|chemspider}}

| StdInChI = 1S/C40H56O/c1-31(2)17-13-20-34(5)23-15-25-35(6)24-14-21-32(3)18-11-12-19-33(4)22-16-26-36(7)27-28-39-37(8)29-38(41)30-40(39,9)10/h11-12,14-19,21-28,38,41H,13,20,29-30H2,1-10H3/b12-11+,21-14+,22-16+,25-15+,28-27+,32-18+,33-19+,34-23+,35-24+,36-26+/t38-/m1/s1

| StdInChIKey_Ref = {{stdinchicite|changed|chemspider}}

| StdInChIKey = ABTRFGSPYXCGMR-AXXBKCDFSA-N

| ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}}

| ChemSpiderID = 4444664

}}

|Section2={{Chembox Properties

| Formula =C₄₀H₅₆O

| MolarMass =552.85 g/mol

| Appearance =Red-orange crystals

| Density =

| MeltingPtC = 160

| BoilingPt =

| Solubility =

}}

|Section3={{Chembox Hazards

| MainHazards =

| FlashPt =

| AutoignitionPt =

}}

}}

Rubixanthin, or natural yellow 27, is a natural xanthophyll pigment with a red-orange color found in rose hips. As a food additive it used under the E number E161d as a food coloring; it is not approved for use in the USA{{Cn|date=October 2011}} or EUUK Food Standards Agency: {{cite web |url=http://www.food.gov.uk/safereating/chemsafe/additivesbranch/enumberlist |title=Current EU approved additives and their E Numbers |access-date=2011-10-27}} but is approved in Australia and New ZealandAustralia New Zealand Food Standards Code{{cite web |url=http://www.comlaw.gov.au/Details/F2011C00827 |title=Standard 1.2.4 - Labelling of ingredients |access-date=2011-10-27}} where it is listed as 161d.