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3,4-Dihydro-2H-pyran

3,4-Dihydro-2H-pyran structure

CAS No.: 110-87-2

Chemical Name:: 3,4-Dihydro-2H-pyran

Synonyms: DHP;DIHYDROPYRAN;3,4-DIHYDROPYRAN;DIHYDROPYRANE;Pyran, dihydro-;dihydro-2H-pyran;3,4-dihydro-2h-pyra;3,4-Dihydro-2-pyran;2,3-DIHYDRO-4H-PYRAN;3,4-Dihydro-2H-pyrane

CBNumber:: CB5324066

Molecular Formula:: C5H8O

Molecular Weight:: 84.12

MDL Number:: MFCD00006558

MOL File:: 110-87-2.mol

MSDS File:: SDS

Last updated:2024-04-08 13:48:25

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3,4-Dihydro-2H-pyran Properties

Melting point	-70 °C (lit.)
Boiling point	86 °C (lit.)
Density	0.922 g/mL at 25 °C (lit.)
vapor density	2.9 (vs air)
vapor pressure	77.8 hPa (20 °C)
refractive index	n20/D 1.440(lit.)
Flash point	4 °F
storage temp.	Store below +30°C.
solubility	7.7g/l
form	Liquid
color	Clear colorless to yellow
PH	7 (5g/l, H2O, 20℃)
explosive limit	1.1-13.8%(V)
Water Solubility	20 g/L (20 ºC)
BRN	103493
Stability	Volatile
InChIKey	BUDQDWGNQVEFAC-UHFFFAOYSA-N
LogP	0.690
CAS DataBase Reference	110-87-2(CAS DataBase Reference)
FDA UNII	T6V9N71IHX
NIST Chemistry Reference	2H-Pyran, 3,4-dihydro-(110-87-2)
EPA Substance Registry System	2H-Pyran, 3,4-dihydro- (110-87-2)

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS02,GHS07

Signal word

Danger

Hazard statements

H225-H315-H317-H319-H412

Precautionary statements

P210-P233-P273-P280-P303+P361+P353-P305+P351+P338

Hazard Codes

F,Xi

Risk Statements

11-36/37/38-36/38-19

Safety Statements

16-26-36-37/39-33-7/9

RIDADR

UN 2376 3/PG 2

WGK Germany

RTECS

UP7700000

Autoignition Temperature

240 °C

Hazard Note

Highly Flammable/Irritant

TSCA

Yes

HazardClass

PackingGroup

HS Code

29329995

Toxicity

LD50 orally in Rabbit: > 4000 mg/kg

NFPA 704

	3
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3,4-Dihydro-2H-pyran price More Price(40)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	D106208	3,4-Dihydro-2H-pyran 97%	110-87-2	100ml	$35.6	2024-03-01	Buy
Sigma-Aldrich	D106208	3,4-Dihydro-2H-pyran 97%	110-87-2	500ml	$121	2024-03-01	Buy
Sigma-Aldrich	8.02971	3,4-Dihydro-2H-pyran for synthesis	110-87-2	100mL	$39.4	2024-03-01	Buy
Sigma-Aldrich	8.02971	3,4-Dihydro-2H-pyran for synthesis	110-87-2	250ML	$84	2024-03-01	Buy
TCI Chemical	D0555	3,4-Dihydro-2H-pyran >97.0%(GC)	110-87-2	25mL	$21	2024-03-01	Buy

Product number	Packaging	Price	Buy
D106208	100ml	$35.6	Buy
D106208	500ml	$121	Buy
8.02971	100mL	$39.4	Buy
8.02971	250ML	$84	Buy
D0555	25mL	$21	Buy

3,4-Dihydro-2H-pyran Chemical Properties,Uses,Production

Chemical Properties

colorless to light yellow liqui

Uses

Widely used hydroxyl-protecting reagent3,4-Dihydro-2H-pyran is used as a hydroxyl-protecting reagent in organic synthesis. It acts as an intermediate in synthetic chemistry. It is used to protect various reactive functional groups. It is involved in the polymerization reaction either alone or with unsaturated compound and finds application in polymer industries. Further, it is employed in the preparation of bicyclic compounds of epoxide-fused, halo compounds and allenic alcohols.

Flammability and Explosibility

Flammable

Safety Profile

A flammable and very dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidzing materials. Keep away from heat and open flame. To fight fire, use alcohol foam, CO2, or dry chemical. When heated to decomposition it emits acrid smoke and irritating

Purification Methods

Partially dry dihydropyran with Na2CO3, then fractionally distil it. The fraction b 84-85o is refluxed with Na until hydrogen no longer evolves when fresh Na is added. It is then dried, and distilled again through a 60 x 1.2cm column packed with glass rings [Brandon et al. J Am Chem Soc 72 2120 1950, UV: Elington et al. J Chem Soc 2873 1952, NMR: Bushweller & O'Neil Tetrahedron Lett 4713 1969]. It has been characterised as the 3,5-dinitrobenzoyloxy-tetrahydrofuran derivative, m 103o which forms pale yellow crystals from dihydropyran/Et2O [Woods & Kramer J Am Chem Soc 69 2246 1947]. [Beilstein 17/1 V 181.]

3,4-Dihydro-2H-pyran synthesis

Synthesis of 3,4-Dihydro-2H-pyran from Allyl ether

3,4-Dihydro-2H-pyran Preparation Products And Raw materials

Raw materials

Tetrahydrofurfuryl alcohol

Preparation Products

Glutaraldehyde 2-[(5-NITRO-2-FURYL)METHOXY]TETRAHYDRO-2H-PYRAN 2-ethoxyoxane 4-CHLORO-2-(TETRAHYDRO-2H-PYRAN-2-YL)-5-HYDROXYPYRIDAZIN-3(2H)-ONE 1-{2-[(Tetrahydro-2H-pyran-2-yl)oxy]ethyl}-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

Pyrazole-3-boronic acid O-(Tetrahydro-2H-pyran-2-yl)hydroxylamine Tetrahydropyran 3,4-DIHYDRO-2H-PYRAN-5-CARBALDEHYDE (S)-TETRAHYDRO-2H-PYRAN-3-OL

2,5-DICHLOROHYDROQUINONE 2-(3,4-Dihydro-2H-pyran-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2-METHOXYTETRAHYDROPYRAN N-Benzyl-9-(tetrahydro-2H-pyran-2-yl)adenine

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3,4-Dihydro-2H-pyran Suppliers

Global( 619)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Shanghai Time Chemicals CO., Ltd.	+86-021-57951555 +8617317452075	jack.li@time-chemicals.com	China	1807	55
Hebei Yanxi Chemical Co., Ltd.	+8617531190177	peter@yan-xi.com	China	5993	58
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	7377	58
Capot Chemical Co.,Ltd.	571-85586718 +8613336195806	sales@capotchem.com	China	29797	60
Shanghai Daken Advanced Materials Co.,Ltd	+86-371-66670886	info@dakenam.com	China	15371	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21695	55
Hangzhou FandaChem Co.,Ltd.	008657128800458; +8615858145714	fandachem@gmail.com	China	9352	55
Shanghai Yingrui Biopharma Co., Ltd.	+86-21-33585366 - 03@	sales03@shyrchem.com	CHINA	738	60
Jiangsu Qingquan Chemical Co., Ltd.	+86-571-86589381,86589382,86589383	sales1@qqpharm.com	CHINA	154	55
career henan chemical co	+86-0371-86658258	sales@coreychem.com	China	29914	58

Supplier	Advantage
Shanghai Time Chemicals CO., Ltd.	55
Hebei Yanxi Chemical Co., Ltd.	58
Henan Fengda Chemical Co., Ltd	58
Capot Chemical Co.,Ltd.	60
Shanghai Daken Advanced Materials Co.,Ltd	58
Henan Tianfu Chemical Co.,Ltd.	55
Hangzhou FandaChem Co.,Ltd.	55
Shanghai Yingrui Biopharma Co., Ltd.	60
Jiangsu Qingquan Chemical Co., Ltd.	55
career henan chemical co	58

Organic synthesis intermediates：3,4-Dihydro-2H-pyran
3,4-Dihydro-2H-pyran is a natural product found in Gossypium hirsutum with data available. Dihydro-2h-pyran appears as a clear....
Apr 26，2022

View Lastest Price from 3,4-Dihydro-2H-pyran manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2024-04-08	3,4-Dihydro-2H-pyran 110-87-2	US $34.00-1.20 / kg	1kg	99%	g-kg-tons, free sample is available	Henan Fengda Chemical Co., Ltd
2023-09-12	3,4-Dihydro-2H-pyran 110-87-2	US $10.00-1.00 / kg	1kg	0.99	10 tons	Hebei Yanxi Chemical Co., Ltd.
2023-09-06	3,4-Dihydro-2H-pyran 110-87-2	US $0.00 / KG	1KG	99%	500000kg	Hebei Guanlang Biotechnology Co., Ltd.

3,4-Dihydro-2H-pyran
110-87-2
US $34.00-1.20 / kg
99%
Henan Fengda Chemical Co., Ltd

3,4-Dihydro-2H-pyran
110-87-2
US $10.00-1.00 / kg
0.99
Hebei Yanxi Chemical Co., Ltd.

3,4-Dihydro-2H-pyran
110-87-2
US $0.00 / KG
99%
Hebei Guanlang Biotechnology Co., Ltd.

3,4-Dihydro-2H-pyran Spectrum

3,4-Dihydro-2H-pyran(110-87-2)MS 3,4-Dihydro-2H-pyran(110-87-2)¹HNMR 3,4-Dihydro-2H-pyran(110-87-2)¹³CNMR 3,4-Dihydro-2H-pyran(110-87-2)IR1 3,4-Dihydro-2H-pyran(110-87-2)Raman

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delta(Sup2)-Dihydropyran delta2-Dihydropyran pyran,dihydro- δ2-dihydropyran 5,6-DIHYDRO-4H-PYRAN 3,4-DIHYDRO-2ETA-PYRAN 3,4-DIHYDRO-2H-PYRAN 3,4-Dihydro-2H-pyran,99% 2,3-Dihydro-2H-pyran 2,3-Dihydropyran, DHP 3,4-Dihydro-2H-pyran ,98% 3,4-Dihydro-2H-pyran, 99% 100GR 3,4-Dihydro-2H-pyran, 99% 500GR 3,4-Dihydro-2H-pyran (DHP) Dihydropyran,3,4-Dihydro-2H-pyran 3,4-DIHYDRO-2H-PYRAN FOR SYNTHESIS Dihydropyran/DHP 3,4-Dihydro-2H-pyran 2H-3,4-Dihydropyran 2H-Pyran,3,4-dihydro- 3,4-Dihdro-2H-pyrane 3,4-DIHYDRO-2H-PYRAN, 97%3,4-DIHYDRO-2H-PYRAN, 97%3,4-DIHYDRO-2H-PYRAN, 97%3,4-DIHYDRO-2H-PYRAN, 97% 3,4-Dihydro-2H-pyran > 3,4-Dihydro-2H-pyran ISO 9001：2015 REACH 3,4-Dihydro-2H-pyran (3,4-DHP) pure, 98% 3,4-dihydro-2h-pyra 3,4-Dihydro-2-pyran Pyran, dihydro- DIHYDROPYRAN DHP 3,4-DIHYDROPYRAN DIHYDROPYRANE dihydro-2H-pyran 3,4-Dihydro-2H-pyrane 2,3-DIHYDRO-4H-PYRAN 3,4-Dihydro-2H-Pyan 3,4-Dihydro-2H-pyran, ≥ 96.0% 110-87-2 Others Protection and Derivatization Protecting and Derivatizing Reagents Synthetic Reagents Protection & Derivatization Reagents (for Synthesis) Halogenated Heterocycles ,Isoquinolines ,Quinolines ,Quinazolines ,Quinaldines Protection and Derivatization Others Protecting and Derivatizing Reagents Protection & Derivatization Reagents (for Synthesis) Synthetic Organic Chemistry Oxygen cyclic compounds