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trans-2-Methyl-2-pentenoic acid

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Origin: China

Cas No: 16957-70-3

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 50 mt/month

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

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Products Specification
Product Description

Property

CAS No.: 16957-70-3 Formula: C6H10O2 Molecular Weight: 114.14200

Description

trans-2-Methyl-2-pentenoic Acid is an unsaturated analog of the anticonvulsant Valproic Acid and is used for aroma characterization of different beers with different hops.

Basic Info

Chemical Name	trans-2-Methyl-2-pentenoic acid
Synonyms	2-methyl-2-butenoyl chloride; ethyl methacrylic acid; methylpentenoic acid; 2-Methylcrotonic acid chloride; 2-Pentenoic acid, 2-methyl-, (E)-; trans-2-methyl-2-butenoyl chloride; dimethylacryloyl chloride; 2-Methyl-2-pentenoic acid; 2,3-dimethylacryloyl chloride; 1-carboxy-2-ethyl-1-methylethene; tiglic acid chloride; 3-cis-Methyl-methacryloyl chloride; Tiglyl chloride; 2-methylpentenoic acid;
CAS No.	16957-70-3
Molecular Formula	C6H10O2
Molecular Weight	114.14200
PSA	37.30000
LogP	1.42730

Properties

Appearance & Physical State	Colorless to pale yellow liquid. Fruity odor.
Density	0.979
Boiling Point	123-125ºC (30 mmHg)
Melting Point	26-28ºC
Flash Point	107ºC
Refractive Index	1.4585-1.4605
Stability	Stable under normal temperatures and pressures.
Storage Condition	Store in a cool, dry place. Store in a tightly closed container. Corrosives area.
Vapor Pressure	0.0554mmHg at 25°C

Safety Info

Hazard Class	8
Safety Statements	S26-S36/37/39-S45
WGK Germany	2
Packing Group	III
RIDADR	UN 3261
Risk Statements	R34
Hazard Codes	C

Synthesis Route

tiglic acid+iodomethane→2,2-Dimethylbut-3-enoic acid+trans-2-Methyl-2-pentenoic acid
2-Methyl-2-pentenal→trans-2-Methyl-2-pentenoic acid
(E)-2-methyl-1-(trimethylsilyl)pent-2-en-1-one→trans-2-Methyl-2-pentenoic acid

Precursor

methyl 3-acetyloxy-2-methylidenepentanoate
2-Methyl-2-pentenal
(E)-2-methyl-1-(trimethylsilyl)pent-2-en-1-one
ethyl 2-methylpent-2-enoate

Downstream Product

Methyl (2E)-2-methyl-2-pentenoate
2-Methyl-1-pentanol
(Z)-2-methylpent-2-enoic acid
Ethyl 2-Methylpentanoate

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