2H-pyran
type: Thing
alternate name: oxine
alternate name: pyran
alternate name: α-pyran
description: chemical compound
additional property: PropertyValue
  property ID: P31
  value: type of chemical entity
additional property: PropertyValue
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additional property: PropertyValue
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additional property: PropertyValue
  property ID: P274
  value: C₅H₆O
additional property: PropertyValue
  property ID: P279
  value: pyran
additional property: PropertyValue
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additional property: PropertyValue
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additional property: PropertyValue
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additional property: PropertyValue
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additional property: PropertyValue
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additional property: PropertyValue
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additional property: PropertyValue
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  value: DTXSID80893659
additional property: PropertyValue
  property ID: P3117
  value: DTXSID401349138
additional property: PropertyValue
  property ID: P3219
  value: pyranne
additional property: PropertyValue
  property ID: P3827
  value: pyrans
additional property: PropertyValue
  property ID: P5076
  value: RD-16-05084
additional property: PropertyValue
  property ID: P6185
  value: 4H-pyran
additional property: PropertyValue
  property ID: P6366
  value: 2777505907
additional property: PropertyValue
  property ID: P8224
  value: 1,2-Pyran 3D ball.png
additional property: PropertyValue
  property ID: P8494
  value: DTXCID601323691
additional property: PropertyValue
  property ID: P10283
  value: C2777505907
additional property: PropertyValue
  property ID: P11089
  value: 1102684
confidence:
  popularity graph score:
    score: 0.023
    score pct: 2
    tier: established
    components:
      sitelinks: 26
      sitelinks norm: 0.061
      unique citations: 8
      unique citations norm: 0.003
      monthly pageviews: 0
      monthly pageviews norm: 0.0
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  unique citations: 8
  monthly pageviews: 0
  yearly pageviews: 46
  pageview trend:
    m: 2026-06
    v: 8
  pageview trend:
    m: 2026-05
    v: 1
  pageview trend:
    m: 2026-05
    v: 12
  pageview trend:
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    v: 4
  popularity:
    sitelinks: 26
    max: 423
    pct: 6.1
    rank label: top 10%
  tier: established
claims:
  P31:
    value: Q113145171
    source count: 0
    confidence: 0.0
    value label: type of chemical entity
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    value: 2H-Pyran.svg
    source count: 0
    confidence: 0.0
  P231:
    value: 289-66-7
    source count: 1
    confidence: 0.2
  P233:
    value: C1C=CC=CO1
    source count: 1
    confidence: 0.2
  P234:
    value: InChI=1S/C5H6O/c1-2-4-6-5-3-1/h1-4H,5H2
    source count: 1
    confidence: 0.2
  P235:
    value: MGADZUXDNSDTHW-UHFFFAOYSA-N
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    confidence: 0.4
  P274:
    value: C₅H₆O
    source count: 1
    confidence: 0.2
  P279:
    value: Q134879951
    source count: 0
    confidence: 0.0
    value label: pyran
  P646:
    value: /m/03djz1
    source count: 1
    confidence: 0.2
  P652:
    value: CH5P2A5WTT
    source count: 1
    confidence: 0.2
  P661:
    value: 161812
    source count: 1
    confidence: 0.2
  P662:
    value: 186148
    source count: 2
    confidence: 0.4

value: 35592
source count: 2
confidence: 0.4

value: science/pyran
source count: 0
confidence: 0.0

value: 3535541
source count: 1
confidence: 0.2

value:
  unit: Q483261
  amount: +82.041865
source count: 1
confidence: 0.2

value: 11025
source count: 1
confidence: 0.2

value: 1956229
source count: 1
confidence: 0.2

value: 3140356
source count: 0
confidence: 0.0

value: DTXSID80893659
source count: 0
confidence: 0.0

value: DTXSID401349138
source count: 1
confidence: 0.2

value: pyranne
source count: 0
confidence: 0.0

value: pyrans
source count: 0
confidence: 0.0

value: RD-16-05084
source count: 1
confidence: 0.2

value: Q27116524
source count: 1
confidence: 0.2
value label: 4H-pyran

value: 2777505907
source count: 0
confidence: 0.0

value: 1,2-Pyran 3D ball.png
source count: 0
confidence: 0.0

value: DTXCID601323691
source count: 0
confidence: 0.0

value: C2777505907
source count: 1
confidence: 0.2

value: 1102684
source count: 1
confidence: 0.2

source: CAS Common Chemistry
stated in qid: Q18907859
retrieved: 2021-04-09

source: OpenAlex
stated in qid: Q107507571
retrieved: 2022-01-26

title: 2H-pyran
source: PubChem
stated in qid: Q278487
retrieved: 2016-10-06

title: 2H-Pyran
source: ChemSpider
stated in qid: Q2311683
retrieved: 2016-10-06

title: 2H-pyran
source: ChEBI
stated in qid: Q902623
retrieved: 2016-10-06

title: 2H-Pyran
source: ChEBI
stated in qid: Q902623
retrieved: 2019-06-20

source: Freebase Data Dumps
stated in qid: Q15241312
pub year: 2013

source: ChEBI release 2020-09-01
stated in qid: Q98915402

source: UniChem
stated in qid: Q24170711

wikidata id: Q217356
domain: type_of_chemical_entity
level: standard
html url: https://4ort.xyz/entity/2h-pyran
markdown url: https://4ort.xyz/entity/2h-pyran.md
facts url summary: https://4ort.xyz/entity/2h-pyran/facts.json
facts url standard: https://4ort.xyz/entity/2h-pyran/facts.json
facts url full: https://4ort.xyz/entity/2h-pyran/facts.json
data source: Wikidata (CC0 / public domain)
license: https://creativecommons.org/publicdomain/zero/1.0/
api version: v1
served at: 2026-08-24T07:03:36.607422Z
entity updated at: 2026-05-03T22:54:58.348740+00:00Z
entity created at: 2026-04-10T23:55:28.860869+00:00Z