Thiopyran

Thiopyran is a heterocyclic compound with the chemical formula C₅H₆S.^[1] It has two isomers, 2H-thiopyran and 4H-thiopyran, which differ by the location of double bonds. Thiopyrans are analogous to pyrans in which the oxygen atoms have been replaced by sulfur atoms.

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Thiopyran

2H-Thiopyran 4H-Thiopyran
Names
IUPAC name 2H-Thiopyran; 4H-Thiopyran
Identifiers
CAS Number	(2H): 289-72-5 Y (4H): 289-70-3 Y
ChemSpider	(2H): 555888 N (4H): 119913 N
PubChem CID	(2H): 640539 (4H): 136136
UNII	(4H): W44DE4RPN2 (2H) Y
CompTox Dashboard (EPA)	(2H): DTXSID60348753
Properties
Chemical formula	C5H6S
Molar mass	98.16 g·mol−1
Density	1.1446g/cm3
Boiling point	241.5 °C (466.7 °F; 514.6 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

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