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(2S)-1-[2-Methylpropanoyl]-pyrrolidine-2-carboxylic Acid

Product Name
(2S)-1-[2-Methylpropanoyl]-pyrrolidine-2-carboxylic Acid
CAS No.
23500-15-4
Chemical Name
(2S)-1-[2-Methylpropanoyl]-pyrrolidine-2-carboxylic Acid
Synonyms
captopril-ep-imp-E;Captopril Impurity R;Captopril impurity E;L-1-Isobutyrylproline;1-Isobutyryl-L-proline;Captopril impurity E CRS;Captopril Desmercapto Impurity;(2S)-1-[2-Methylpropanoyl]-pyrrolid;L-Proline, 1-(2-methyl-1-oxopropyl)-;Captopril Impurity 6(Captopril EP Impurity E)
CBNumber
CB92605022
Molecular Formula
C9H15NO3
Formula Weight
185.22
MOL File
23500-15-4.mol
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(2S)-1-[2-Methylpropanoyl]-pyrrolidine-2-carboxylic Acid Property

Melting point:
122.6-123.7℃
Boiling point:
369.6±35.0 °C(Predicted)
Density 
1.182±0.06 g/cm3(Predicted)
storage temp. 
2-8°C
pka
3.71±0.20(Predicted)
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Hazard and Precautionary Statements (GHS)

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
Y0000435
Product name
Captopril impurity E
Purity
European Pharmacopoeia (EP) Reference Standard
Packaging
15 mg
Price
$156
Updated
2025/07/31
Sigma-Aldrich
Product number
Y0000435
Product name
Captopril impurity E
Purity
European Pharmacopoeia (EP) Reference Standard
Packaging
y0000435
Price
$153
Updated
2024/03/01
TRC
Product number
M324870
Product name
(2S)​-​1-​(2-​Methylpropanoyl)​pyrrolidine-​2-​carboxylicAcid
Packaging
25mg
Price
$170
Updated
2021/12/16
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(2S)-1-[2-Methylpropanoyl]-pyrrolidine-2-carboxylic Acid Chemical Properties,Usage,Production

Uses

(2S)?-?1-?(2-?methylpropanoyl)?pyrrolidine-?2-?carboxylic Acid (Captopril EP Impurity E) is an impurity of Captopril (C175750), an orally active angiotensin-converting enzyme (ACE) inhibitor(1) which acts as a neuroprotective & neuroresearch product.

(2S)-1-[2-Methylpropanoyl]-pyrrolidine-2-carboxylic Acid Preparation Products And Raw materials

Raw materials

Preparation Products

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(2S)-1-[2-Methylpropanoyl]-pyrrolidine-2-carboxylic Acid Suppliers

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23500-15-4, (2S)-1-[2-Methylpropanoyl]-pyrrolidine-2-carboxylic AcidRelated Search:


  • (2S)-1-[2-Methylpropanoyl]-pyrrolidine-2-carboxylic Acid
  • L-1-Isobutyrylproline
  • 1-Isobutyryl-L-proline
  • Captopril impurity E
  • (S)-1-isobutyrylpyrrolidine-2-carboxylic acid
  • Captopril Impurity R
  • Captopril Impurity 6(Captopril EP Impurity E)
  • captopril-ep-imp-E
  • Imp. E (EP):(2S)-1-[2-Methylpropanoyl]-pyrrolidine-2-carboxylic Acid
  • Captopril impurity E CRS
  • (2S)-1-[2-Methylpropanoyl]-pyrrolid
  • L-Proline, 1-(2-methyl-1-oxopropyl)-
  • Captopril Desmercapto Impurity
  • (2S)-1-(2-methylpropanoyl)pyrrolidine-2-carboxylic acid - [M85635]
  • 23500-15-4