{{Chembox | ImageFile = Chromane.svg | ImageSize = 200px | PIN = 3,4-Dihydro-2''H''-1-benzopyran | OtherNames = Chroman; Benzodihydropyran; Benzoxane |Section1={{Chembox Identifiers | CASNo = 493-08-3 | CASNo_Ref = {{Cascite|correct|CAS}} | Beilstein = 116150 | ChEBI = 33224 | ChemSpiderID = 120093 | EC_number = 874-955-4 | Gmelin = 122981 | UNII_Ref = {{fdacite|correct|FDA}} | UNII = EJ8R7LY9PK | PubChem = 136319 | SMILES = C1CC2=CC=CC=C2OC1 | InChI = 1/C9H10O/c1-2-6-9-8(4-1)5-3-7-10-9/h1-2,4,6H,3,5,7H2 | InChIKey = VZWXIQHBIQLMPN-UHFFFAOYAB | StdInChI = 1S/C9H10O/c1-2-6-9-8(4-1)5-3-7-10-9/h1-2,4,6H,3,5,7H2 | StdInChIKey = VZWXIQHBIQLMPN-UHFFFAOYSA-N }} |Section2={{Chembox Properties | C=9 | H=10 | O=1 | Appearance = | Density = | MeltingPt = | BoilingPt = | Solubility = }} |Section3={{Chembox Hazards | GHS_ref=<ref>{{cite web |title=Chromane |url=https://pubchem.ncbi.nlm.nih.gov/compound/136319#section=Safety-and-Hazards |website=pubchem.ncbi.nlm.nih.gov |access-date=22 February 2024 |language=en}}</ref> | GHSPictograms = {{GHS02}}{{GHS07}} | GHSSignalWord = Warning | HPhrases = {{H-phrases|226|302|315|319|335}} | PPhrases = {{P-phrases|210|233|240|241|242|243|261|264|264+265|270|271|280|301+317|302+352|303+361+353|304+340|305+351+338|319|321|330|332+317|337+317|362+364|370+378|403+233|403+235|405|501}} | MainHazards = | FlashPt = | AutoignitionPt = }} |Section8={{Chembox Related |OtherCompounds = Tetrahydroquinoline, Tetralin, Chromene, Coumaran }} }}
'''Chromane''' ('''benzodihydropyran''') is a heterocyclic chemical compound with the chemical formula C<sub>9</sub>H<sub>10</sub>O.<ref>{{cite journal |last1=Rindfusz |first1=R. E. |title=Syntheses of Chromanes and Coumaranes |journal=Journal of the American Chemical Society |date=April 1919 |volume=41 |issue=4 |pages=665–670 |doi=10.1021/ja01461a015}}</ref> Chromane is a structural feature of more complex compounds including E vitamins (tocopherols and tocotrienols), Dianin's compound, and the pharmaceutical drugs troglitazone, ormeloxifene, and nebivolol. Such compounds are sometimes described as chromans.
==See also== * Chromene (benzopyran)
==References== {{Reflist}}
==External links== * {{commonscat inline|Benzodihydropyrans|lcfirst=yes}} * {{wiktionary inline}}
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Category:Chromanes