2,7-Dimethyl-2,3-dihydro-4H,5H-pyrano[4,3-b]pyran-4,5-dione

Modify Date: 2025-08-23 22:49:38

2,7-Dimethyl-2,3-dihydro-4H,5H-pyrano[4,3-b]pyran-4,5-dione structure	Common Name	2,7-Dimethyl-2,3-dihydro-4H,5H-pyrano[4,3-b]pyran-4,5-dione
	CAS Number	18735-96-1	Molecular Weight	194.18400
	Density	1.29g/cm3	Boiling Point	331.2ºC at 760 mmHg
	Molecular Formula	C₁₀H₁₀O₄	Melting Point	N/A
	MSDS	N/A	Flash Point	148.2ºC

Name	2,7-dimethyl-2,3-dihydropyrano[3,2-c]pyran-4,5-dione
Synonym	More Synonyms

Density	1.29g/cm3
Boiling Point	331.2ºC at 760 mmHg
Molecular Formula	C₁₀H₁₀O₄
Molecular Weight	194.18400
Flash Point	148.2ºC
Exact Mass	194.05800
PSA	56.51000
LogP	1.30190
Vapour Pressure	0.000158mmHg at 25°C
Index of Refraction	1.539

CHEMICAL IDENTIFICATION

RTECS NUMBER :: UQ1356500

CHEMICAL NAME :: 4H,5H-Pyrano(4,3-b)pyran-4,5-dione, 2,3-dihydro-2,7-dimethyl-

CAS REGISTRY NUMBER :: 18735-96-1

BEILSTEIN REFERENCE NO. :: 1311628

LAST UPDATED :: 199612

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C10-H10-O4

MOLECULAR WEIGHT :: 194.20

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 1679 mg/kg

TOXIC EFFECTS :: Brain and Coverings - recordings from specific areas of CNS Behavioral - convulsions or effect on seizure threshold Behavioral - tetany

REFERENCE :: FRPSAX Farmaco, Edizione Scientifica. (Casella Postale 227, 27100 Pavia, Italy) V.8-43 1953-88 For publisher information, see FRMCE8 Volume(issue)/page/year: 29,861,1974

triacetate lactone structure

triacetate lactone

CAS#:675-10-5

Crotonic acid structure

Crotonic acid

CAS#:107-93-7

~55%

2,7-Dimethyl-2,3-dihydro-4H,5H-pyrano[4,3-b]pyran-4,5-dione Structure

2,7-Dimethyl-2,...

CAS#:18735-96-1

Literature: Zehnder, Luke R.; Dahl, Jason W.; Hsung, Richard P. Tetrahedron Letters, 2000 , vol. 41, # 12 p. 1901 - 1905

Precursor 2
CAS#:675-10-5 triacetate lactone CAS#:107-93-7 Crotonic acid
DownStream 1
CAS#:33176-11-3 2,7-dimethylpyr...

2,3-Dihydro-2,7-dimethyl-4H,5H-pyrano-<4,3-b>pyran-4,5-dion

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