4-Methylthio-2-butanone

CAS No.：34047-39-7

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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4-Methylthio-2-butanone Basic information

Product Name:	4-Methylthio-2-butanone
Synonyms:	4-(methylthio)-2-butanon;FEMA 3375;4-(METHYLMERCAPTO)-2-BUTANONE;4-METHYLTHIO-2-BUTANONE;4-(METHYLTHIO)BUTAN-2-ONE;4-METHYLTHIO-2-BUTANONE 97+%;2-Butanone, 4-(methylthio)- (6CI,7CI,8CI,9CI);4-(Methylthio)-2-butanone,98%
CAS:	34047-39-7
MF:	C5H10OS
MW:	118.2
EINECS:	251-810-8
Product Categories:	Alphabetical Listings;Flavors and Fragrances;ACETYLGROUP;sulfide Flavor;M-N
Mol File:	34047-39-7.mol

4-Methylthio-2-butanone Chemical Properties

Boiling point	105-107 °C/55 mmHg (lit.)
density	1.003 g/mL at 25 °C (lit.)
refractive index	n20/D 1.473(lit.)
FEMA	3375 \| 4-(METHYLTHIO)-2-BUTANONE
Fp	162 °F
JECFA Number	497
CAS DataBase Reference	34047-39-7(CAS DataBase Reference)
EPA Substance Registry System	2-Butanone, 4-(methylthio)- (34047-39-7)

Safety Information

Risk Statements	10
Safety Statements	16-24/25
RIDADR	1224
WGK Germany	3
TSCA	Yes
HS Code	29309090

MSDS Information

Provider	Language
SigmaAldrich	English
ALFA	English

4-Methylthio-2-butanone Usage And Synthesis

Description	4-(Methylthio)-2-butanone has a flavor like arrowhead. It is sweet, sulfurous, and fruity. May be prepared from methylvinyl ketone and methylmercaptan; from methylvinyl ketone and methyl-Ws (methy lthio)aluminum.
Chemical Properties	4-Methylthio-2-butanone has a flavor similar to arrowhead: sweet, sulfurous and fruity
Chemical Properties	Colorless liquid
Occurrence	Reported found in kohlrabi.
Preparation	From methylvinyl ketone and methylmercaptan; from methylvinyl ketone and methyl-bis (methylthio)aluminum.
Taste threshold values	Taste characteristics at 15 ppm: sulfureous, potato, earthy, vegetative, fatty, fishy, metallic and mushroom.

4-Methylthio-2-butanone Preparation Products And Raw materials

Raw materials

Sodium thiomethoxide-->4,4-bis(methylthio)but-3-en-2-one-->4-CHLORO-2-BUTANONE-->4-Methylthio-4-methyl-2-pentanone-->Methyl vinyl ketone-->METHYL MERCAPTAN-->Formaldehyde-->Acetone

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