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2-dehydropantolactone

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Origin: China

Cas No: 13031-04-4

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 100 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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CAS No.: 13031-04-4 Formula: C6H8O3 Molecular Weight: 128.12600

Basic Info

Chemical Name	2-dehydropantolactone
Synonyms	4,4-dimethyloxolane-2,3-dione; ketopantolactone; 2,3-Furandione,dihydro-4,4-dimethyl; 4,4-Dimethyldihydro-2,3-furandione; 4,4-dimethyl-2,3(5H)-furandione; Keto-pantoyllactone; dihydro-4,4-dimethylfuran-2,3-dione; 4,4-dimethyltetrahydrofuran-2,3-dione; Dihydro-4,4-dimethyl-2,3-Furandione; 4,4-Dimethyldihydrofuran-2,3-dione; 2-oxopantoyl lactone; 2-dehydropantoyl lactone;
CAS No.	13031-04-4
Molecular Formula	C6H8O3
Molecular Weight	128.12600
PSA	43.37000
LogP	0.13850

Properties

Density	1.152g/cm3
Boiling Point	260.5ºC at 760mmHg
Melting Point	67-69ºC(lit.)
Flash Point	122.8ºC
Refractive Index	1.445
Vapor Pressure	0.0122mmHg at 25°C

Safety Info

HS Code	2932190090
WGK Germany	3

Synthesis Route

Formaldehyde→2-dehydropantolactone+DL-Pantolactone
Formaldehyde+3-Methyl-2-oxobutanoic acid, sodium salt→2-dehydropantolactone+DL-Pantolactone
isobutyraldehyde+Diethyl oxalate→2-dehydropantolactone+dihydro-4,4-dimethyl-5-(1-methylethyl)-2,3-furandione

Precursor

3-Methyl-2-oxobutanoic acid, sodium salt
DL-Pantolactone
Formaldehyde
Diethyl oxalate

Downstream Product

Methyl DL-mandelate
DL-Pantolactone
methyl (2R)-2-hydroxy-2-phenylacetate
(R)-pantolactone

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