3-METHYL-1-BUTYNE

CAS No.：598-23-2

Important Notice

This product is a chemical product/pharmaceutical intermediate. It is not a drug, an active pharmaceutical ingredient (API), or a pharmaceutical-grade material. It has not been granted a drug approval number or a Chemical Drug Substance Approval Notice, has not passed drug-related review and approval, and is not manufactured, tested, or released in accordance with pharmaceutical GMP.
This product is intended solely for non-clinical research, process development, quality studies, further chemical processing, or chemical synthesis. It must not be used in drug-product manufacturing, clinical trials, clinical diagnosis, or administration to humans or animals, or be sold, used as an input, submitted for regulatory filing, or released as an API or pharmaceutical material.
The purchaser must not use this product, or supply it to another party, for personal consumption, sports or fitness, weight loss, health supplements, food, or animal feed.

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3-METHYL-1-BUTYNE Basic information

Product Name:	3-METHYL-1-BUTYNE
Synonyms:	1-Butyne, 3-methyl- (6CI, 7CI, 8CI, 9CI);3-METHYL-1-BUTYNE,96%;3-Methyl-1-butyneIsopropylacetylene;3-Methyl-1-butyne ,95%;1-Isopentyne;Isopropylethyne;3-Methyl-1-butyne 95%;(CH3)2CHCequivCH
CAS:	598-23-2
MF:	C5H8
MW:	68.12
EINECS:	209-925-6
Product Categories:
Mol File:	598-23-2.mol

3-METHYL-1-BUTYNE Chemical Properties

Melting point	-89.7°C
Boiling point	29,5°C
density	0.666 g/mL at 25 °C (lit.)
RTECS	PF9060500
Fp	-30°(-22°F)
refractive index	1.374
storage temp.	2-8°C
form	Liquid
color	Clear colorless to slightly yellow
Water Solubility	Miscible with alcohol. Immiscible with water.
CAS DataBase Reference	598-23-2

Safety Information

Hazard Codes	F+
Risk Statements	11-12
Safety Statements	3/7-9-16-33
RIDADR	3295
WGK Germany	3
HazardClass	3.1
PackingGroup	II
HS Code	29012990

MSDS Information

3-METHYL-1-BUTYNE Usage And Synthesis

Chemical Properties	Clear colorless to slightly yellow liquid
Uses	3-Methyl-1-butyne is a terminal alkyne that under goes hydrosilylation reaction using phenylsilane. 3-Methyl-1-butyne is used as an intermediate for pharmaceuticals, in cosmetics and in chemical research.
Definition	ChEBI: A terminal acetylenic compound that is but-1-yne substituted by a methyl group at position 3.

3-METHYL-1-BUTYNE Preparation Products And Raw materials

Raw materials	1-Butene, 1,1-dibromo-3-methyl--->1,1-dichloro-3-methylbutane-->1,2-DIBROMO-3-METHYLBUTANE-->2-methylbut-3-yn-1-ol-->1,1-Dichloro-3-methylbutene-1-->1,2-Butadiene, 1-bromo-3-methyl--->1-(TRIPHENYLPHOSPHORANYLIDENE)-3-METHYL&-->3-METHYL-1,2-BUTADIENE-->2,2-dichloro-3-methylbutane-->DIISOPROPYL SULFATE-->3-Methyl-2-butanone-->SODIUM ACETYLIDE-->Isoprene-->2-METHYL-1-BUTEN-3-YNE
Preparation Products	3-CHLORO-3-METHYL-1-BUTYNE-->4-METHYL-2-PENTYNE-->Stellasterol-->Iodobenzene

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