ChemicalBook > CAS DataBase List > 4,5-Dimethylthiazole

4,5-Dimethylthiazole

Product Name
4,5-Dimethylthiazole
CAS No.
3581-91-7
Chemical Name
4,5-Dimethylthiazole
Synonyms
Thiazole, 4,5-dimethyl-;FEMA 3274;FEMA NUMBER 3274;4,5-dimethyl-thiazol;2,2-Dimethylthiazole;4,5-DIMETHYLTHIAZOLE;4,5-Dimethylthiazole>4,5-Dimethylthiazole,98%;4,5-DIMETHYL-1,3-THIAZOLE;4,5-Dimethylthiazole ,99%
CBNumber
CB3246371
Molecular Formula
C5H7NS
Formula Weight
113.18
MOL File
3581-91-7.mol
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4,5-Dimethylthiazole Property

Melting point:
83-84 C
Boiling point:
158 °C/742 mmHg (lit.)
Density 
1.07 g/mL at 25 °C (lit.)
refractive index 
n20/D 1.521(lit.)
FEMA 
3274 | 4,5-DIMETHYLTHIAZOLE
Flash point:
124 °F
storage temp. 
Sealed in dry,Room Temperature
form 
solid
pka
pK1:3.73 (25°C,μ=0.1)
Specific Gravity
1.070
Odor
at 0.10 % in dipropylene glycol. roasted nutty fishy green boiled shrimp
Odor Type
fishy
JECFA Number
1035
BRN 
105694
LogP
2.09
CAS DataBase Reference
3581-91-7(CAS DataBase Reference)
NIST Chemistry Reference
Thiazole, 4,5-dimethyl-(3581-91-7)
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Safety

Hazard Codes 
Xn,Xi,F
Risk Statements 
10-22-37/38-41-36/37/38
Safety Statements 
16-26-39-37/39-36/37/39
RIDADR 
UN 1993 3/PG 3
WGK Germany 
3
RTECS 
XJ4380000
HazardClass 
3
PackingGroup 
III
HS Code 
29349990
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H226Flammable liquid and vapour

H302Harmful if swallowed

H315Causes skin irritation

H318Causes serious eye damage

H335May cause respiratory irritation

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
W327409
Product name
4,5-Dimethylthiazole
Purity
≥97%, FG
Packaging
sample
Price
$89.3
Updated
2024/03/01
TCI Chemical
Product number
D2142
Product name
4,5-Dimethylthiazole
Purity
>98.0%(GC)
Packaging
5g
Price
$26
Updated
2024/03/01
TCI Chemical
Product number
D2142
Product name
4,5-Dimethylthiazole
Purity
>98.0%(GC)
Packaging
25g
Price
$79
Updated
2024/03/01
Alfa Aesar
Product number
A10785
Product name
4,5-Dimethylthiazole, 98%
Packaging
5g
Price
$25.65
Updated
2024/03/01
Alfa Aesar
Product number
A10785
Product name
4,5-Dimethylthiazole, 98%
Packaging
25g
Price
$105.65
Updated
2024/03/01
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4,5-Dimethylthiazole Chemical Properties,Usage,Production

Chemical Properties

4,5-Dimethylthiazole is a colorless to light yellow liquid that has a roasted nutty, meaty, boiled poultry-like odor.

Occurrence

Reported found in peanuts, toasted oats, malt, peach, pork, coffee, krill, shrimp and scallops

Uses

4,5-Dimethylthiazole was used in the preparation of 4-(bromomethyl)-5-(dibromomethyl)thiazole.

Preparation

From methyl-α-bromoethyl ketone; by oxidation of 2-mercaptothiazoles with hydrogen peroxide in aqueous solution; from 2-mercapto-4,5-dimethylthiazole.

Definition

ChEBI: 4,5-Dimethylthiazole is a member of thiazoles.

Aroma threshold values

Detection: 470 ppb

Taste threshold values

Taste characteristics at 5 ppm: fishy, amine and pyridine-like with shrimp and savory nuances

Synthesis Reference(s)

The Journal of Organic Chemistry, 6, p. 764, 1941 DOI: 10.1021/jo01205a011

General Description

4,5-Dimethylthiazole is a thiazoles compounds that containing a thiazole ring substituted at positions 4 and 5 only. Radical bromination of 4,5-dimethylthiazole using N-bromosuccinimide in the presence of 2,2′-azobisisobutyronitrile yields mono-, tri- and tetrabromo compounds.

4,5-Dimethylthiazole Preparation Products And Raw materials

Raw materials

Formamide

Preparation Products

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4,5-Dimethylthiazole Suppliers

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View Lastest Price from 4,5-Dimethylthiazole manufacturers

Shaanxi Dideu Medichem Co. Ltd
Product
4,5-Dimethylthiazole 3581-91-7
Price
US $1.00/Kg
Min. Order
1Kg
Purity
98%
Supply Ability
20T
Release date
2024-07-24
JINING XINHE CHEMICAL CO., LTD
Product
4,5-Dimethylthiazole 3581-91-7
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
10ton
Release date
2024-07-16
JINING XINHE CHEMICAL CO., LTD
Product
4,5-Dimethyl thiazole 3581-91-7
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
98.99%
Supply Ability
10ton
Release date
2024-07-15

3581-91-7, 4,5-DimethylthiazoleRelated Search:

N,N-Dimethylformamide 2-(2-Aminothiazol-4-yl)glyoxylic acid Dimethyl sulfide Dimethyl fumarate 2,2'-Dithiobis(benzothiazole) Benzothiazole ETHANE 2-Mercaptobenzothiazole Dimethyl ether Dimethyl phthalate Thiazole Dimethyl sulfoxide 5-(2-Hydroxyethyl)-4-methylthiazole Fosthiazate Methylchloroisothiazolinone/methylisothiazolinone mixture (MCIT/MIT) 3-BENZYL-5-(2-HYDROXYETHYL)-4-METHYLTHIAZOLIUM CHLORIDE Thiamine chloride 2-AMINO-4,5-DIMETHYLTHIAZOLE HCL,2-AMINO-4,5-DIMETHYLTHIAZOLE HYDROCHLORIDE

  • FEMA NUMBER 3274
  • FEMA 3274
  • 4,5-dimethyl-thiazol
  • 4 5-DIMETHYLTHIAZOLE 97+%
  • 4,5-Dimethylthiazole,98%
  • dimethylthiazole,4,5-dimethylthiazole
  • Thiazole, 4,5-dimethyl-
  • 4,5-DIMETHYL THIAZOLE FEMA NO.3274
  • 4,5-DIMETHYL-1,3-THIAZOLE
  • 4,5-DIMETHYLTHIAZOLE
  • 2,2-Dimethylthiazole
  • 4,5-Dimethylthiazole ,99%
  • 4,5-Dimethylthiazole&gt
  • 4,5-Dimethylthiazole USP/EP/BP
  • Food Additives 4, 5-Dimethylthiazole CAS 3581-91-7
  • 3581-91-7
  • -SCHNCCH3CCH3
  • Building Blocks
  • Heterocyclic Building Blocks
  • Thiazoles
  • thiazole Flavor
  • Alphabetical Listings
  • C-D
  • Flavors and Fragrances
  • Building Blocks
  • Heterocyclic Building Blocks
  • Heterocyclic Compounds
  • Thiazoles