{{chembox | Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 417955916 | Name = 2,4-Dihydroxybenzaldehyde | ImageFile = 2,4-Dihydroxybenzaldehyde structurre 2.png | ImageSize = | ImageFile1 = 2,4-Dihydroxybenzaldehyde.jpg | PIN = 2,4-Dihydroxybenzaldehyde | OtherNames = β-Resorcylaldehyde<br>4-Formylresorcinol<br>6-Formylresorcinol<br>4-Hydroxysalicylaldehyde<br>2,4-Dihydroxybenzenecarbonal<br>2,4-Dihydroxybenzyl aldehyde<ref name=crc>{{cite book |ref=Haynes| editor= Haynes, William M. | date = 2016| title = CRC Handbook of Chemistry and Physics | edition = 97th | publisher = CRC Press | isbn = 9781498754293|page=3.190}}</ref> |Section1={{Chembox Identifiers | CASNo = 95-01-2 | CASNo_Ref = {{cascite|correct|CAS}} | Beilstein = 878548 | ChEBI = 50198 | ChEMBL_Ref = {{ebicite|correct|EBI}} | ChEMBL = 243587 | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 6943 | EINECS = 202-383-1 | Gmelin = 218304 | UNII_Ref = {{fdacite|correct|FDA}} | UNII = 772JOF6LZS | KEGG_Ref = | KEGG = | PubChem = 7213 | SMILES =C1=CC(=C(C=C1O)O)C=O | InChI = 1/C7H6O3/c8-4-5-1-2-6(9)3-7(5)10/h1-4,9-10 | InChIKey = | StdInChI_Ref = {{stdinchicite|changed|chemspider}} | StdInChI = 1S/C7H6O3/c8-4-5-1-2-6(9)3-7(5)10/h1-4,9-10H | StdInChIKey_Ref = {{stdinchicite|changed|chemspider}} | StdInChIKey = IUNJCFABHJZSKB-UHFFFAOYSA-N | MeSHName = }} |Section2={{Chembox Properties | Formula = C<sub>7</sub>H<sub>6</sub>O<sub>3</sub> | MolarMass = 138.12 g/mol | Appearance = | Density = | MeltingPtC = 135 | MeltingPt_ref = <ref name=crc/> | BoilingPtC = 226 | BoilingPt_ref = <ref name=crc/> | Solubility = soluble<ref name=crc/> }} |Section7={{Chembox Hazards | GHS_ref=<ref>{{cite web |title=2,4-Dihydroxybenzaldehyde |url=https://pubchem.ncbi.nlm.nih.gov/compound/7213#section=Safety-and-Hazards |website=pubchem.ncbi.nlm.nih.gov |language=en}}</ref> | GHSPictograms = {{GHS07}} | GHSSignalWord = Warning | HPhrases = {{H-phrases|302|315|319|335}} | PPhrases = {{P-phrases|261|264|264+265|270|271|280|301+317|302+352|304+340|305+351+338|319|321|330|332+317|337+317|362+364|403+233|405|501}} }} }}

'''2,4-Dihydroxybenzaldehyde''' or '''β-resorcylaldehyde''' is a phenolic aldehyde, a chemical compound with the formula C<sub>7</sub>H<sub>6</sub>O<sub>3</sub>. It is an isomer of protocatechuic aldehyde (3,4-dihydroxybenzaldehyde).

== References == {{reflist}}

{{DEFAULTSORT:Dihydroxybenzaldehyde, 2,4-}} Category:4-Hydroxybenzaldehyde derivatives Category:Resorcinols Category:Salicylaldehyde derivatives

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