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257931

Sigma-Aldrich

3-Methyl-1-butene

95%

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Synonym(s):
α-Isoamylene, 2-Methyl-3-butene, 3,3-Dimethylpropene, 3-Methyl-1-butene, Isopropylethene, Isopropylethylene
Linear Formula:
(CH3)2CHCH=CH2
CAS Number:
Molecular Weight:
70.13
Beilstein/REAXYS Number:
505980
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

vapor pressure

14.97 psi ( 20 °C)

Quality Level

assay

95%

bp

20 °C (lit.)

mp

−168.5-−168 °C (lit.)

density

0.627 g/mL at 25 °C (lit.)

SMILES string

CC(C)C=C

InChI

1S/C5H10/c1-4-5(2)3/h4-5H,1H2,2-3H3

InChI key

YHQXBTXEYZIYOV-UHFFFAOYSA-N

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1 of 4

This Item
190403303259257486
vibrant-m

257931

3-Methyl-1-butene

vibrant-m

190403

2,3-Dimethyl-1-butene

vibrant-m

303259

1-Chloro-3-methyl-2-butene

vibrant-m

257486

2-Methyl-1-butene

assay

95%

assay

97%

assay

95%

assay

98%

mp

−168.5-−168 °C (lit.)

mp

−158 °C (lit.)

mp

-

mp

−137 °C (lit.)

bp

20 °C (lit.)

bp

56 °C (lit.)

bp

58-59 °C/120 mmHg (lit.)

bp

31 °C (lit.)

density

0.627 g/mL at 25 °C (lit.)

density

0.68 g/mL at 25 °C (lit.)

density

0.928 g/mL at 25 °C (lit.)

density

0.65 g/mL at 25 °C (lit.)

vapor pressure

14.97 psi ( 20 °C)

vapor pressure

412 mmHg ( 37.7 °C)

vapor pressure

-

vapor pressure

9.98 psi ( 20 °C)

General description

Gas-phase reaction of the OH radical with 3-methyl-1-butene in the presence of NO has been investigated. Polymerization of 3-methyl-1-butene in the presence of homogeneous metallocene catalyst (co-catalyst methylalumoxane) has been investigated.

Application

3-Methyl-1-butene has been used in asymmetric total synthesis of (−)-Linderol A, a potent inhibitor of melanin biosynthesis of cultured B-16 melanoma cells.

Recommended products

Brass hose adapter Z146811 or brass body mini gas regulator Z513539 is recommended.

hose barb

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Description
Pricing

regulator

Product No.
Description
Pricing

signalword

Danger

Hazard Classifications

Aquatic Chronic 2 - Asp. Tox. 1 - Flam. Liq. 1 - STOT SE 3

target_organs

Respiratory system

Storage Class

3 - Flammable liquids

wgk_germany

WGK 3

flash_point_f

-70.6 °F - closed cup

flash_point_c

-57 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves


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2,3-Dimethyl-1-butene 97%

Sigma-Aldrich

190403

2,3-Dimethyl-1-butene

cis-2-Butene ≥99%

Sigma-Aldrich

400890

cis-2-Butene

3,3-Dimethyl-1-butene ≥98.5% (GC)

Sigma-Aldrich

39832

3,3-Dimethyl-1-butene

2-Methylpropene 99%

Sigma-Aldrich

295469

2-Methylpropene

trans-2-Butene ≥99%

Sigma-Aldrich

295086

trans-2-Butene

Masayuki Yamashita et al.
The Journal of organic chemistry, 72(15), 5697-5703 (2007-06-21)
The first asymmetric total synthesis of (-)-Linderol A, a potent inhibitor of melanin biosynthesis of cultured B-16 melanoma cells, has been achieved via two key reactions: a diastereoselective [2+2] photocycloaddition of a coumarin-3-carboxylate bearing a chiral auxiliary with 3-methyl-1-butene and
Products of the gas-phase reaction of the OH radical with 3-methyl-1-butene in the presence of NO.
Atkinson R, et al.
International Journal of Chemical Kinetics, 30(8), 577-587 (1998)
Polymerization of 3-methyl-1-butene promoted by metallocene catalysts.
Borriello A, et al.
Macromolecular Rapid Communications, 17(8), 589-597 (1996)

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