2(5H)-Furanone

497-23-4

Furan-2(5H)-one

BUTENOLIDE

Isocrotonolactone

2-Buten-4-olide

2-Butenolide

gamma-Crotonolactone

2H-furan-5-one

2-Oxo-2,5-dihydrofuran

Crotonolactone

4-Hydroxy-2-butenoic acid lactone

2-(5H)-furanone

gamma-Crotolactone

alpha,beta-Crotonolactone

delta,alpha,beta-Butenolide

gamma-Hydroxycrotonic acid lactone

5H-furan-2-one

but-2-en-4-olide

2-Butenoic acid gamma-lactone

2-Butenoic acid-gamma-lactone

.gamma.-Crotonolactone

2-Buten-1,4-olide

2,5-dihydrofuran-2-one

4-Hydroxycrotonic acid gamma-lactone

NSC 197009

2,5-Dihydrofuranone

2-Butenoic acid, 4-hydroxy-, gamma-lactone

MFCD00005376

4-Hydroxy-2-butenoic acid gamma-lactone

CHEMBL166223

CHEBI:38118

2-Butenoic acid-.gamma.-lactone

8KXK25H388

.delta.,.alpha.,.beta.-Butenolide

.gamma.-Hydroxycrotonic acid lactone

NSC-197009

4-Hydroxy-2-butenoic acid .gamma.-lactone

Crotonic acid, 4-hydroxy-, .gamma.-lactone

2-Butenoic acid, 4-hydroxy-, .gamma.-lactone

.DELTA..alpha.,.beta.-Butolide

2-Butenoic acid, .gamma.-lactone

.DELTA..alpha.,.beta.-Butenolide

CCRIS 5722

EINECS 207-839-3

BRN 0383585

UNII-8KXK25H388

g-Crotonolactone

?-Crotonolactone

5H-furanone

HSDB 8151

2_5H_furanone

CRATONE

.gamma.-Crotolactone

5 H-Furan-2-one

(5H)-furan-2-one

alpha,alpha,beta-Butolide

2(5H)FURANONE

.BETA.-CROTONOLACTONE

2(5H)-Furanone, 98%

5-17-09-00112 (Beilstein Handbook Reference)

laquo gammaRaquo -crotolactone

.alpha.,.beta.-Crotonolactone

Crotonic acid, 4-hydroxy-, gamma-lactone (6CI,7CI)

laquo gammaRaquo -crotonolactone

DTXSID7075422

FEMA NO. 4138

VIHAEDVKXSOUAT-UHFFFAOYSA-

BCP15247

NSC51296

BBL103594

BDBM50360798

NSC-51296

NSC197009

STL557404

AKOS000268618

CS-W008270

HY-W008270

laquo deltaRaquo ,alpha,beta-butenolide

MCULE-4296503663

SB60895

Crotonic acid, 4-hydroxy-, gamma-lactone

SY017893

2-Butenoic acid-laquo gammaRaquo -lactone

DB-027466

2-Oxo-2,5-dihydrofuran(2-[5H]-furanone)

5-OXO-2,5-DIHYDROFURAN-3-YL ESTER

A7404

AM20100212

NS00021175

EN300-80159

laquo gammaRaquo -hydroxycrotonic acid lactone

C17601

2(5H)-Furanone (laquo gammaRaquo -crotonolactone)

4-Hydroxy-2-butenoic acid laquo gammaRaquo -lactone

J-506134

Q4596886

Crotonic acid, 4-hydroxy-, laquo gammaRaquo -lactone

2-Butenoic acid, 4-hydroxy-, laquo gammaRaquo -lactone

Z1219048777

4-HYDROXY-2-BUTENOIC ACID .GAMMA.-LACTONE [FHFI]

InChI=1/C4H4O2/c5-4-2-1-3-6-4/h1-2H,3H2

The Henry's Law constant for 2(5H)-furanone is estimated as 9.7X10-6 atm-cu m/mole(SRC) using a fragment constant estimation method(1). This Henry's Law constant indicates that 2(5H)-furanone is expected to volatilize from water surfaces(2). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as 3.6 days(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 29 days(SRC). 2(5H)-Furanone's Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). 2(5H)-Furanone is not expected to volatilize from dry soil surfaces(SRC) based upon a an estimated vapor pressure of 0.98 mm Hg(SRC), determined from a fragment constant method(3).
Literature: (1) Meylan WM, Howard PH; Environ Toxicol Chem 10: 1283-93 (1991) (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (3) Lyman WJ; p. 31 in Environmental Exposure From Chemicals Vol I, Neely WB, Blau GE, eds, Boca Raton, FL: CRC Press (1985)

In water, 8.50X10+5 mg/L at 25 deg C (est)
Literature: US EPA; Estimation Program Interface (EPI) Suite. Ver. 4.1. Nov, 2012. Available from, as of Nov 14, 2013: http://www.epa.gov/oppt/exposure/pubs/episuitedl.htm

Using a structure estimation method based on molecular connectivity indices(1), the Koc of 2(5H)-furanone can be estimated to be 6(SRC). According to a classification scheme(2), this estimated Koc value suggests that 2(5H)-furanone is expected to have very high mobility in soil.
Literature: (1) US EPA; Estimation Program Interface (EPI) Suite. Ver. 4.1. Jan, 2011. Available from, as of Nov 25, 2013: http://www.epa.gov/oppt/exposure/pubs/episuitedl.htm (2) Swann RL et al; Res Rev 85: 17-28 (1983)