{{Chembox| Verifiedfields = changed| Watchedfields = changed| verifiedrevid = 456486843| ImageFileL1 = Vanillin2.svg| ImageFileL1_Ref = {{chemboximage|correct|??}}| ImageNameL1 = Skeletal formula of a vanillin minor tautomer| ImageFileR1 = Vanillin-3d.png| ImageFileR1_Ref = {{chemboximage|correct|??}}| ImageNameR1 = Spacefill model of a vanillin minor tautomer| PIN = 4-Hydroxy-3-methoxybenzaldehyde| OtherNames = Vanillin Methyl vanillin Vanillic aldehyde |Section1={{Chembox Identifiers| IUPHAR_ligand = 6412| CASNo = 121-33-5| CASNo_Ref = {{cascite|correct|CAS}}| PubChem = 1183| ChemSpiderID = 13860434| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}| UNII = CHI530446X| UNII_Ref = {{fdacite|correct|FDA}}| EINECS = 204-465-2| KEGG = D00091| KEGG_Ref = {{keggcite|correct|kegg}}| MeSHName = vanillin| ChEBI = 18346| ChEBI_Ref = {{ebicite|correct|EBI}}| ChEMBL = 13883| ChEMBL_Ref = {{ebicite|correct|EBI}}| RTECS = YW5775000| Beilstein = 472792| Gmelin = 3596| 3DMet = B00167| SMILES = c1(C=O)cc(OC)c(O)cc1| StdInChI = 1S/C8H8O3/c1-11-8-4-6(5-9)2-3-7(8)10/h2-5,8H,1H3| StdInChI_Ref = {{stdinchicite|changed|chemspider}}| InChI = 1/C8H8O3/c1-11-8-4-6(5-9)2-3-7(8)10/h2-5,10H,1H3| StdInChIKey = MWOOGOJBHIARFG-UHFFFAOYSA-N| StdInChIKey_Ref = {{stdinchicite|changed|chemspider}}| InChIKey = MWOOGOJBHIARFG-UHFFFAOYAS}}|Section2={{Chembox Properties| C=8 | H=8 | O=3 | Appearance = White crystals| Odor = Vanilla, Sweet, Balsamic, Pleasant| Density = 1.056 g cm{{sup|−3}}| MeltingPtK = 354 to 356| BoilingPtC = 285| Solubility = 10 g dm{{sup|−3}}| LogP = 1.208| VaporPressure = >1 Pa| pKa = 7.781| pKb = 6.216}}|Section3={{Chembox Structure| CrystalStruct = Monoclinic}}|Section4={{Chembox Thermochemistry| DeltaHc = −3.828 MJ mol{{sup|−1}}}}|Section5={{Chembox Hazards| ExternalSDS = hazard.com| GHSPictograms = {{GHS exclamation mark}}| GHSSignalWord = وانیلین ({{lang-en|Vanillin}}، {{lang-ru|Ванилин}}، {{lang-ar|فانيلين}}) بیر شیمیایی ماده. آغ، کریستال حالتینده تاپیلار. فنول  کیمی تانینیر.