ChemicalBook > CAS DataBase List > (2RS)-2-(4-BUTYLPHENYL)PROPANOIC ACID

(2RS)-2-(4-BUTYLPHENYL)PROPANOIC ACID

Product Name
(2RS)-2-(4-BUTYLPHENYL)PROPANOIC ACID
CAS No.
3585-49-7
Chemical Name
(2RS)-2-(4-BUTYLPHENYL)PROPANOIC ACID
Synonyms
2-(4-BUTYLPHENYL)PROPANOIC ACID;p-Butyl Ibuprofen;IBUPROFEN IMPURITY B;Ibuprofen EP Impurity B;p-Butyl Ibuprofen SodiuM Salt;4-Butyl-α-Methylbenzeneacetic Acid;Ibuprofen EP Impurity B (Free Acid);Dexibuprofen ImpurityⅠ:p-Butyl Ibuprofen(Alpha-methyl-4-butylphenylacetic acid);IBUPROFEN IMP B;Ibuprofen EP IMP B
CBNumber
CB2248631
Molecular Formula
C13H18O2
Formula Weight
206.28
MOL File
3585-49-7.mol
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(2RS)-2-(4-BUTYLPHENYL)PROPANOIC ACID Property

Melting point:
142 - 144°C
Boiling point:
143 °C(Press: 0.5 Torr)
Density 
1.031±0.06 g/cm3(Predicted)
Flash point:
2℃
storage temp. 
Refrigerator
solubility 
Aqueous Base (Slightly), Chloroform (Slightly), Methanol (Slightly)
pka
4.43±0.10(Predicted)
form 
liquid
color 
White to Off-White
Stability:
Hygroscopic
InChIKey
FEFPDZIYEWFQFK-UHFFFAOYSA-N
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Safety

RIDADR 
UN 1648 3 / PGII
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H225Highly Flammable liquid and vapour

H319Causes serious eye irritation

Precautionary statements

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

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
BP880
Product name
Ibuprofen impurity B
Purity
British Pharmacopoeia (BP) Reference Standard
Packaging
1.15ML
Price
$285
Updated
2025/07/31
Sigma-Aldrich
Product number
B1220000
Product name
Ibuprofen impurity B
Purity
European Pharmacopoeia (EP) Reference Standard
Packaging
1.15 mL
Price
$236
Updated
2025/07/31
Sigma-Aldrich
Product number
B1220000
Product name
(2RS)-2-(4-Butylphenyl)propanoic acid solution
Purity
European Pharmacopoeia (EP) Reference Standard
Packaging
b1220000
Price
$220
Updated
2024/03/01
Sigma-Aldrich
Product number
PHR1934
Product name
Ibuprofen Impurity B
Purity
Pharmaceutical Secondary Standard; Certified Reference Material
Packaging
20mg
Price
$917
Updated
2025/07/31
Usbiological
Product number
005373
Product name
p-Butyl Ibuprofen
Packaging
25mg
Price
$460
Updated
2021/12/16
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(2RS)-2-(4-BUTYLPHENYL)PROPANOIC ACID Chemical Properties,Usage,Production

Uses

An Ibuprofen (I140000) impurity.

(2RS)-2-(4-BUTYLPHENYL)PROPANOIC ACID Preparation Products And Raw materials

Raw materials

Preparation Products

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(2RS)-2-(4-BUTYLPHENYL)PROPANOIC ACID Suppliers

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3585-49-7, (2RS)-2-(4-BUTYLPHENYL)PROPANOIC ACIDRelated Search:

Ibuprofen Blonanserin iMpurity 1-Hydroxyibuprofen (S)-(+)-Ibuprofen 1-Oxo Ibuprofen Ibuprofen Ethyl Ester 2-[4-(2-Methylpropyl)phenyl] ethanol 6-isobutyl-3-methyl-2,3-dihydro-1H-inden-1-one 2-(4-Methylphenyl)propanoic acid 4'-(2-Methylpropyl)acetophenone rac 2-Hydroxy Ibuprofen 4-(2-Methylpropyl)benzeneethanol (R)-(-)-IBUPROFEN Ibuprofen EP Impurity I 3-(4-ISOBUTYL-PHENYL)-PROPIONIC ACID p-Isobutylstyrene rac-Ibuprofen amide rac a-Hydroxy Ibuprofen

  • 4-butyl-.alpha.-methylbenzeneacetic acid
  • p-Butyl Ibuprofen
  • (2RS)-2-(4-Butylphenyl)propionic acid
  • 2-(4-n-Butylphenyl)propionic Acid
  • 2-(p-Butylphenyl)propionic Acid
  • 4-Butyl-α-Methylbenzeneacetic Acid
  • p-Butylhydratropic Acid
  • Ibuprofen IMpurity-O(EP/BP)
  • p-Butyl Ibuprofen SodiuM Salt
  • (2RS)-2-(4-Butylphenyl)propanoic acid solution
  • Ibuprofen EP Impurity B
  • Benzeneacetic acid,4-butyl-a-methyl-
  • 2-(4-BUTYLPHENYL)PROPANOIC ACID
  • IBUPROFEN IMP B
  • IBUPROFEN IMPURITY B
  • Dexibuprofen ImpurityⅠ:p-Butyl Ibuprofen(Alpha-methyl-4-butylphenylacetic acid)
  • Ibuprofen EP IMP B
  • Benzeneacetic acid, 4-butyl--alpha--methyl- (9CI)
  • Ibuprofen Impurity B Sodium Salt
  • 4-Butyl-α-methylbenzeneacetic Acid Sodium Salt
  • Ibuprofen EP Impurity B (Sodium Salt)
  • Ibuprofen EP Impurity B (Free Acid)
  • Ibuprofen Impurity 17
  • 2-(4-Butylphenyl)propionic acid, racemic
  • Ibuprofen EP Impurity B:Ibuprofen Impurity B
  • Ibuprofen impurity B CRS
  • (2RS)-2-(4-Butylphenyl)propanoic Ac
  • Benzeneacetic acid, 4-butyl-α-methyl-
  • 4-Butyl-α-methylbenzeneaceticAcidSodiumSalt
  • Ibuprofen Impurity 17（Ibuprofen EP Impurity B）
  • Ibuprofen EP Impurity BQ: What is Ibuprofen EP Impurity B Q: What is the CAS Number of Ibuprofen EP Impurity B Q: What is the storage condition of Ibuprofen EP Impurity B Q: What are the applications of Ibuprofen EP Impurity B
  • Ibuprofen impurity B (B1220000)
  • (2RS)-2-(4-BUTYLPHENYL)PROPANOIC ACID
  • Arginine ibuprofen impurity B
  • Dexibuprofen Impurity I/4-Butyl-α-methylbenzeneacetic acid
  • 3585-49-7
  • 20628
  • Aromatics
  • Inhibitors
  • Intermediates & Fine Chemicals
  • Metabolites & Impurities
  • Pharmaceuticals
  • PHENYL