Syringaldehyde

{{chembox

| Verifiedfields = changed

| Watchedfields = changed

| verifiedrevid = 470475460

| ImageFile = Syringaldehyde.svg

| PIN = 4-Hydroxy-3,5-dimethoxybenzaldehyde

| OtherNames = 3,5-Dimethoxy-4-hydroxybenzene carbonal, Gallaldehyde 3,5-dimethyl ether, 4-Hydroxy-3,5-dimethoxybenzaldehyde, Syringic aldehyde

|Section1={{Chembox Identifiers

| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}

| ChemSpiderID = 8333

| InChI = 1/C9H10O4/c1-12-7-3-6(5-10)4-8(13-2)9(7)11/h3-5,11H,1-2H3

| InChIKey = KCDXJAYRVLXPFO-UHFFFAOYAW

| ChEBI_Ref = {{ebicite|correct|EBI}}

| ChEBI = 67380

| ChEMBL_Ref = {{ebicite|correct|EBI}}

| ChEMBL = 225303

| StdInChI_Ref = {{stdinchicite|correct|chemspider}}

| StdInChI = 1S/C9H10O4/c1-12-7-3-6(5-10)4-8(13-2)9(7)11/h3-5,11H,1-2H3

| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}

| StdInChIKey = KCDXJAYRVLXPFO-UHFFFAOYSA-N

| CASNo_Ref = {{cascite|correct|CAS}}

| CASNo = 134-96-3

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

| UNII = 2ZR01KTT21

| EINECS = 205-167-5

| PubChem = 8655

| SMILES = COc1cc(cc(c1O)OC)C=O

| RTECS = CU5760000

}}

|Section2={{Chembox Properties

| Formula = C₉H₁₀O₄

| MolarMass = 182.17 g/mol

| Appearance = colorless solid

| Density = 1.01 g/cm³

| MeltingPtC = 110 to 113

| MeltingPt_notes =

| BoilingPtC = 192 to 193

| BoilingPt_notes = at 19 kPa

| Solubility = Insoluble

}}

|Section3={{Chembox Hazards

| ExternalSDS = [https://fscimage.fishersci.com/msds/64324.htm External MSDS]

| NFPA-H = 1

| NFPA-F = 0

| NFPA-R = 0

| NFPA-S =

| GHS_ref={{cite web |title=Syringaldehyde |url=https://pubchem.ncbi.nlm.nih.gov/compound/8655#section=Safety-and-Hazards |website=pubchem.ncbi.nlm.nih.gov |language=en}}

| GHSPictograms = {{GHS07}}

| GHSSignalWord = Warning

| HPhrases = {{H-phrases|302|315|319|335}}

| PPhrases = {{P-phrases|261|264|270|271|280|301+312|302+352|304+340|305+351+338|312|330|332+313|337+313|362|403+233|405|501}}

| FlashPt = >

| FlashPtC = 110

| FlashPt_notes = c.c.

| AutoignitionPt =

}}

}}

Syringaldehyde is an organic compound that occurs in trace amounts widely in nature. Some species of insects use syringaldehyde in their chemical communication systems. Scolytus multistriatus uses it as a signal to find a host tree during oviposition.Vanillin and Syringaldehyde as Attractants for Scolytus multistriatus (Coleoptera: Scolytidae). Meyer H.J. and Norris D.M., Annals of the Entomological Society of America, 17 July 1967, Volume 60, Number 4, pages 858-859, ([http://www.ingentaconnect.com/content/esa/aesa/1967/00000060/00000004/art00024#expand/collapse abstract])

Because it contains many functional groups, it can be classified in many ways - aromatic, aldehyde, phenol. It is a colorless solid (impure samples appear yellowish) that is soluble in alcohol and polar organic solvents. Its refractive index is 1.53.{{citation needed|date=July 2014}}