5-Methylthiophene-2-carboxaldehyde

Synonym(s):bread thiophene;NSC 87542

CAS NO.：13679-70-4
Empirical Formula: C6H6OS
Molecular Weight: 126.18
MDL number: MFCD00005434
EINECS: 237-178-6
SAFETY DATA SHEET (SDS)
Update Date: 2024-10-30 18:52:02

5-Methylthiophene-2-carboxaldehyde Structural

What is 5-Methylthiophene-2-carboxaldehyde?

Description

May be synthesized from thiophene (or its derivatives) and formamide in the presence of POCl3; from N-(2-thenyl)formaldimines.

Chemical properties

CLEAR YELLOW TO BROWN LIQUID

Occurrence

Reported found in French fried potato, roasted peanuts, tomato, wheat bread, raw chicken, cooked beef, pork liver, cognac, malt whiskey, coffee, popcorn, krill, shrimp and okra

The Uses of 5-Methylthiophene-2-carboxaldehyde

5-Methylthiophene-2-carboxaldehyde is used as a food additive. It is an analytical reagent. The reagent has been synthesized and characterized using IR, 1H NMR and Mass spectral data.

Preparation

From thiophene (or its derivatives) and formamide in the presence of POCl3; from N-(2-thienyl)formaldimines.

Definition

ChEBI: 5-Methyl-2-thiophenecarboxaldehyde is a member of thiophenes.

Taste threshold values

Taste characteristics at 5 ppm: sweet, almond, fruity, heliotropine and nutty

General Description

5-Methyl-2-thiophenecarboxaldehyde can be obtained as a product from 2-thiophenecarboxaldehyde via metalation, and alkylation, followed by a series of reactions.

Properties of 5-Methylthiophene-2-carboxaldehyde

Melting point:	184-186 °C
Boiling point:	114 °C/25 mmHg (lit.)
Density	1.17 g/mL at 25 °C (lit.)
refractive index	n20/D 1.583(lit.)
FEMA	3209 \| 5-METHYL-2-THIOPHENECARBOXALDEHYDE
Flash point:	190 °F
storage temp.	2-8°C
solubility	Soluble in ether and ethanol.
form	Liquid
Specific Gravity	1.180
color	Clear yellow to brown
Odor	at 0.10 % in dipropylene glycol. sweet almond cherry furfural woody acetophenone
Sensitive	Air Sensitive
JECFA Number	1050
BRN	106896
CAS DataBase Reference	13679-70-4(CAS DataBase Reference)
NIST Chemistry Reference	5-Methyl-2-thiophenecarboxaldehyde(13679-70-4)
EPA Substance Registry System	2-Thiophenecarboxaldehyde, 5-methyl- (13679-70-4)

Safety information for 5-Methylthiophene-2-carboxaldehyde

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H227:Flammable liquids
Precautionary Statement Codes	P403+P235:Store in a well-ventilated place. Keep cool.