ChemicalBook > CAS DataBase List > 2-METHYL-4H-THIENO[3,2-B]PYRROLE-5-CARBOXYLIC ACID

2-METHYL-4H-THIENO[3,2-B]PYRROLE-5-CARBOXYLIC ACID

Product Name
2-METHYL-4H-THIENO[3,2-B]PYRROLE-5-CARBOXYLIC ACID
CAS No.
332099-14-6
Chemical Name
2-METHYL-4H-THIENO[3,2-B]PYRROLE-5-CARBOXYLIC ACID
Synonyms
2-METHYL-4H-THIENO[3,2-B]PYRROLE-5-CARBOXYLIC ACID;4H-Thieno[3,2-b]pyrrole-5-carboxylic acid, 2-methyl-
CBNumber
CB8759850
Molecular Formula
C8H7NO2S
Formula Weight
181.21
MOL File
Mol file
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2-METHYL-4H-THIENO[3,2-B]PYRROLE-5-CARBOXYLIC ACID Property

storage temp. 
2-8°C(protect from light)
Appearance
Off-white to light brown Solid
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

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

ChemScene
Product number
CS-0042687
Product name
2-Methyl-4H-thieno[3,2-b]pyrrole-5-carboxylicacid
Packaging
250mg
Price
$78
Updated
2021/12/16
ChemScene
Product number
CS-0042687
Product name
2-Methyl-4H-thieno[3,2-b]pyrrole-5-carboxylicacid
Packaging
1g
Price
$199
Updated
2021/12/16
AK Scientific
Product number
V5239
Product name
2-Methyl-4h-thieno[3,2-b]pyrrole-5-carboxylicacid
Packaging
5g
Price
$691
Updated
2021/12/16
ChemScene
Product number
CS-0042687
Product name
2-Methyl-4H-thieno[3,2-b]pyrrole-5-carboxylicacid
Packaging
5g
Price
$728
Updated
2021/12/16
American Custom Chemicals Corporation
Product number
CHM0074383
Product name
2-METHYL-4H-THIENO[3,2-B]PYRROLE-5-CARBOXYLIC ACID
Purity
95.00%
Packaging
1G
Price
$1091.48
Updated
2021/12/16
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2-METHYL-4H-THIENO[3,2-B]PYRROLE-5-CARBOXYLIC ACID Chemical Properties,Usage,Production

Synthesis

238749-54-7

332099-14-6

General procedure for the synthesis of 2-methyl-4H-thieno[3,2-b]pyrrole-5-carboxylic acid from compound (CAS:238749-54-7): compound 3 (1.82 g, 8.70 mmol, 1 equiv.) was dissolved in ethanol (100 mL), followed by the addition of an aqueous sodium hydroxide solution (50 mL containing 5.35 g NaOH 134 mmol, 15.4 equiv). The reaction mixture was stirred under reflux conditions for 30 minutes. After completion of the reaction, the mixture was cooled and 6N aqueous hydrochloric acid solution was slowly added to neutralize the reaction system. The resulting precipitate was collected by filtration, the precipitate was washed well with water and finally dried under vacuum to afford the target product 2-methyl-4H-thieno[3,2-b]pyrrole-5-carboxylic acid (4) as a white solid (1.41 g, 89.5% yield). Thin layer chromatography (TLC) analysis (silica gel plate, unfolding reagent: hexane/ethyl acetate = 1:1): Rf = 0.2.

References

[1] Patent: EP2022794, 2009, A1. Location in patent: Page/Page column 11; 12

2-METHYL-4H-THIENO[3,2-B]PYRROLE-5-CARBOXYLIC ACID Preparation Products And Raw materials

Raw materials

Preparation Products

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2-METHYL-4H-THIENO[3,2-B]PYRROLE-5-CARBOXYLIC ACID Suppliers

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332099-14-6, 2-METHYL-4H-THIENO[3,2-B]PYRROLE-5-CARBOXYLIC ACIDRelated Search:

4H-THIENO[3,2-B]PYRROLE-5-CARBOXYLIC ACID

  • 2-METHYL-4H-THIENO[3,2-B]PYRROLE-5-CARBOXYLIC ACID
  • 4H-Thieno[3,2-b]pyrrole-5-carboxylic acid, 2-methyl-
  • 332099-14-6