Ibuprofen-impurities | Pharmaffiliates

ibuprofen and its Impurities

Ibuprofen is available under a number of trade names, including Advil and Motrin. Ibuprofen is used primarily to treat fever mild to moderate pain, painful menstruation, osteoarthritis, dental pain, headaches, and pain from kidney stones. It is available as a generic medication. Reference standards of Ibuprofen API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

Displaying 76 results for ibuprofen Impurities

Ibuprofen (1335508)

Ibuprofen (1335508)


  • Catalogue No.:PA USP1335508

  • CAS :

    15687-27-1

  • Molecular Formula : NA

  • Molecular Weight : NA

Ibuprofen Related Compound C (4-isobutylacetophenone) (1335541)

Ibuprofen Related Compound C (4-isobutylacetophenone) (1335541)


  • Catalogue No.:PA USP1335541

  • CAS :

    38861-78-8

  • Molecular Formula : NA

  • Molecular Weight : NA

Ibuprofen Related Compound J (2-(4-Isobutyrylphenyl)propanoic acid) (1335596)

Ibuprofen Related Compound J (2-(4-Isobutyrylphenyl)propanoic acid) (1335596)


  • Catalogue No.:PA USP1335596

  • CAS :

    65813-55-0

  • Molecular Formula : NA

  • Molecular Weight : NA

ibuprofen (539RB)

ibuprofen (539RB)


  • Catalogue No.:PA BP539RB

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PA 09 02790

3-Isobutylphenol

3-Isobutylphenol


  • Catalogue No.:PA 09 02790

  • CAS :

    30749-25-8

  • Molecular Formula : C10H14O

  • Molecular Weight : 150.22

PA 09 02800

1-Ethyl-4-isobutylbenzene

1-Ethyl-4-isobutylbenzene


  • Catalogue No.:PA 09 02800

  • CAS :

    100319-40-2

  • Molecular Formula : C12H18

  • Molecular Weight : 162.28

PA 09 02810

Meta Ethyl Isobutyl Benzene

Meta Ethyl Isobutyl Benzene


  • Catalogue No.:PA 09 02810

  • CAS :

    127807-05-0

  • Molecular Formula : C12H18

  • Molecular Weight : 162.28

PA 09 02820

Hydroxy Ibuprofen

Hydroxy Ibuprofen


  • Catalogue No.:PA 09 02820

  • CAS :

    53949-54-5

  • Molecular Formula : C13H18O3

  • Molecular Weight : 222.28

PA 09 02830

rac-Ibuprofen Carboxymethyl Ester

rac-Ibuprofen Carboxymethyl Ester


  • Catalogue No.:PA 09 02830

  • CAS :

    1797132-75-2

  • Molecular Formula : C15H20O4

  • Molecular Weight : 264.32

PA 09 02840

2-Hydroxypropyl 2-(4-Isobutylphenyl)propanoate

2-Hydroxypropyl 2-(4-Isobutylphenyl)propanoate


  • Catalogue No.:PA 09 02840

  • CAS :

    95093-58-6

  • Molecular Formula : C16H24O3

  • Molecular Weight : 264.37

PA 09 02850

2,3-Dihydroxy-2-(4-isobutylphenyl)propanoic Acid

2,3-Dihydroxy-2-(4-isobutylphenyl)propanoic Acid


  • Catalogue No.:PA 09 02850

  • CAS :

    NA

  • Molecular Formula : C13H18O4

  • Molecular Weight : 238.28

PA 09 02860

1,2 Dihydroxy Ibuprofen

1,2 Dihydroxy Ibuprofen


  • Catalogue No.:PA 09 02860

  • CAS :

    1253593-61-1

  • Molecular Formula : C13H18O4

  • Molecular Weight : 238.28

PA 09 02870

1-(4-(1,2-Dihydroxy-2-methylpropyl)phenyl)ethan-1-one

1-(4-(1,2-Dihydroxy-2-methylpropyl)phenyl)ethan-1-one


  • Catalogue No.:PA 09 02870

  • CAS :

    NA

  • Molecular Formula : C12H16O3

  • Molecular Weight : 208.26

PA 09 02880

2-Hydroxy-1-(4-(1-hydroxyethyl)phenyl)-2-methylpropan-1-one

2-Hydroxy-1-(4-(1-hydroxyethyl)phenyl)-2-methylpropan-1-one


  • Catalogue No.:PA 09 02880

  • CAS :

    NA

  • Molecular Formula : C12H16O3

  • Molecular Weight : 208.26

PA 09 02890

2-[4-(2-Methylpropenyl)phenyl]propionic Acid

2-[4-(2-Methylpropenyl)phenyl]propionic Acid


  • Catalogue No.:PA 09 02890

  • CAS :

    75625-99-9

  • Molecular Formula : C13H16O2

  • Molecular Weight : 204.27

PA STI 052421

Ibuprofen-13C,d3

Ibuprofen-13C,d3


  • Catalogue No.:PA STI 052421

  • CAS :

    1261394-40-4

  • Molecular Formula : C1213CH15D3O2

  • Molecular Weight : 210.30

PAI 09 002310

1-(4-(Bromomethyl)phenyl)ethanone

1-(4-(Bromomethyl)phenyl)ethanone


  • Catalogue No.:PAI 09 002310

  • CAS :

    51229-51-7

  • Molecular Formula : C9H9BrO

  • Molecular Weight : 213.07

PAI 09 002320

1-(4-(3,3-Dimethyloxiran-2-yl)phenyl)ethan-1-one

1-(4-(3,3-Dimethyloxiran-2-yl)phenyl)ethan-1-one


  • Catalogue No.:PAI 09 002320

  • CAS :

    NA

  • Molecular Formula : C12H14O2

  • Molecular Weight : 190.24

PAI 09 002340

1-(4-(Bromomethyl)phenyl)ethan-1-ol

1-(4-(Bromomethyl)phenyl)ethan-1-ol


  • Catalogue No.:PAI 09 002340

  • CAS :

    NA

  • Molecular Formula : C9H11BrO

  • Molecular Weight : 215.09

PAI 09 002350

1-(4-(3,3-Dimethyloxiran-2-yl)phenyl)ethan-1-ol

1-(4-(3,3-Dimethyloxiran-2-yl)phenyl)ethan-1-ol


  • Catalogue No.:PAI 09 002350

  • CAS :

    NA

  • Molecular Formula : C12H16O2

  • Molecular Weight : 192.26

PAI 09 002290

Ethyl 2-(4-(2-hydroxy-2-methylpropanoyl)phenyl)propanoate

Ethyl 2-(4-(2-hydroxy-2-methylpropanoyl)phenyl)propanoate


  • Catalogue No.:PAI 09 002290

  • CAS :

    NA

  • Molecular Formula : C15H20O4

  • Molecular Weight : 264.32

PAI 09 002300

Ethyl 2-(4-(1,2-dihydroxy-2-methylpropyl)phenyl)propanoate

Ethyl 2-(4-(1,2-dihydroxy-2-methylpropyl)phenyl)propanoate


  • Catalogue No.:PAI 09 002300

  • CAS :

    NA

  • Molecular Formula : C15H22O4

  • Molecular Weight : 266.34

PAI 09 002330

2-Hydroxy-2-(4-(1-hydroxy-2-methylpropyl)phenyl)propanoic Acid

2-Hydroxy-2-(4-(1-hydroxy-2-methylpropyl)phenyl)propanoic Acid


  • Catalogue No.:PAI 09 002330

  • CAS :

    1571147-05-1

  • Molecular Formula : C13H18O4

  • Molecular Weight : 238.28

PA 09 0021000

PEG-Ibuprofen Ester

PEG-Ibuprofen Ester


  • Catalogue No.:PA 09 0021000

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PA 09 0021001

4'-Isobutyl-2,2-dibromopropiophenone

4'-Isobutyl-2,2-dibromopropiophenone


  • Catalogue No.:PA 09 0021001

  • CAS :

    104483-05-8

  • Molecular Formula : C13H16Br2O

  • Molecular Weight : 348.08

PA 09 0021002

N-(1-Phenylethyl) Ibuprofen amide (Mixture of 4 Diastereomers)

N-(1-Phenylethyl) Ibuprofen amide (Mixture of 4 Diastereomers)


  • Catalogue No.:PA 09 0021002

  • CAS :

    105959-56-6

  • Molecular Formula : C21H27NO

  • Molecular Weight : 309.45

PAI 09 002351

1-(3-Isobutylphenyl)propan-1-one

1-(3-Isobutylphenyl)propan-1-one


  • Catalogue No.:PAI 09 002351

  • CAS :

    NA

  • Molecular Formula : C13H18O

  • Molecular Weight : 190.29

PAI 09 002352

α-Methyl-3-(2-methylpropyl)-benzeneacetic Acid Methyl Ester

α-Methyl-3-(2-methylpropyl)-benzeneacetic Acid Methyl Ester


  • Catalogue No.:PAI 09 002352

  • CAS :

    859828-57-2

  • Molecular Formula : C14H20O2

  • Molecular Weight : 220.31

PA 09 0021003

(S)-3-Methyl-2-phenylbutanamide

(S)-3-Methyl-2-phenylbutanamide


  • Catalogue No.:PA 09 0021003

  • CAS :

    174290-51-8

  • Molecular Formula : C11H15NO

  • Molecular Weight : 177.25

PA 09 0021004

Ibuprofen sodium salt dihydrate

Ibuprofen sodium salt dihydrate


  • Catalogue No.:PA 09 0021004

  • CAS :

    527688-20-6

  • Molecular Formula : C13H21NaO4

  • Molecular Weight : 264.3

PA 09 0021005

Ibuprofen acyl-β-D-glucuronide

Ibuprofen acyl-β-D-glucuronide


  • Catalogue No.:PA 09 0021005

  • CAS :

    115075-59-7

  • Molecular Formula : C19H26O8

  • Molecular Weight : 382.41

PA 09 0021006

Ibuprofen 2-Monoglyceride

Ibuprofen 2-Monoglyceride


  • Catalogue No.:PA 09 0021006

  • CAS :

    124635-85-4

  • Molecular Formula : C16H24O4

  • Molecular Weight : 280.36

PA 09 0021007

(E)-2,4-bis(4-Isobutylphenyl)but-3-en-2-ol

(E)-2,4-bis(4-Isobutylphenyl)but-3-en-2-ol


  • Catalogue No.:PA 09 0021007

  • CAS :

    NA

  • Molecular Formula : C24H32O

  • Molecular Weight : 336.52

PAI 09 002353

(E)-1,3-bis(4-Isobutylphenyl)prop-2-en-1-one

(E)-1,3-bis(4-Isobutylphenyl)prop-2-en-1-one


  • Catalogue No.:PAI 09 002353

  • CAS :

    NA

  • Molecular Formula : C23H28O

  • Molecular Weight : 320.48

PA 09 0021012

2-(4-isobutylphenyl)propanenitrile

2-(4-isobutylphenyl)propanenitrile


  • Catalogue No.:PA 09 0021012

  • CAS :

    58609-73-7

  • Molecular Formula : C13H17N

  • Molecular Weight : 187.29

PA 09 0021008

Ibufenac

Ibufenac


  • Catalogue No.:PA 09 0021008

  • CAS :

    1553-60-2

  • Molecular Formula : C12H16O2

  • Molecular Weight : 192.26

PA 09 0021009

2-(4-Isobutyrylphenyl)propane

2-(4-Isobutyrylphenyl)propane


  • Catalogue No.:PA 09 0021009

  • CAS :

    72846-62-9

  • Molecular Formula : C13H18O

  • Molecular Weight : 190.29

PA 09 0021010

2,3-Dihydroxypropyl 2-(4- Isobutylphenyl)propanoate

2,3-Dihydroxypropyl 2-(4- Isobutylphenyl)propanoate


  • Catalogue No.:PA 09 0021010

  • CAS :

    64622-21-5

  • Molecular Formula : C16H24O4

  • Molecular Weight : 280.36

PA 09 0021011

2-(4-Isobutylphenyl)prop-2-enoic Acid

2-(4-Isobutylphenyl)prop-2-enoic Acid


  • Catalogue No.:PA 09 0021011

  • CAS :

    6448-14-2

  • Molecular Formula : C13H16O2

  • Molecular Weight : 204.27

PA 09 0021013

Ibuprofen Methocarbamol Ester (Mixture of Diastereomers)

Ibuprofen Methocarbamol Ester (Mixture of Diastereomers)


  • Catalogue No.:PA 09 0021013

  • CAS :

    111632-17-8

  • Molecular Formula : C24H31NO6

  • Molecular Weight : 429.51

PA 09 0021014

Ibuprofen Ester Impurity

Ibuprofen Ester Impurity


  • Catalogue No.:PA 09 0021014

  • CAS :

    87553-98-8

  • Molecular Formula : (C2H4O)Nc13h18o2

  • Molecular Weight : NA

PA 09 0021017

1-(4-(1-hydroxy-2-methylpropyl)phenyl)ethan-1-one

1-(4-(1-hydroxy-2-methylpropyl)phenyl)ethan-1-one


  • Catalogue No.:PA 09 0021017

  • CAS :

    1314907-71-5

  • Molecular Formula : C12H16O2

  • Molecular Weight : 192.26

PA 09 0021018

2-(4-(cyclopropanecarbonyl)phenyl)propanoic acid

2-(4-(cyclopropanecarbonyl)phenyl)propanoic acid


  • Catalogue No.:PA 09 0021018

  • CAS :

    35982-04-8

  • Molecular Formula : C13H14O3

  • Molecular Weight : 218.25

PA 09 0021019

1-(4-(3-(4-(4-fluoro-2-hydroxybenzoyl)piperidin-1-yl)propoxy)-3-methoxyphenyl)ethan-1-one

1-(4-(3-(4-(4-fluoro-2-hydroxybenzoyl)piperidin-1-yl)propoxy)-3-methoxyphenyl)ethan-1-one


  • Catalogue No.:PA 09 0021019

  • CAS :

    170170-50-0

  • Molecular Formula : C24H28FNO5

  • Molecular Weight : 429.49

PA 09 0021015

Methyl 2-(2-chlorophenyl)-2-((2-(thiophen-2-yl)ethyl)amino)acetate hydrochloride

Methyl 2-(2-chlorophenyl)-2-((2-(thiophen-2-yl)ethyl)amino)acetate hydrochloride


  • Catalogue No.:PA 09 0021015

  • CAS :

    141109-18-4

  • Molecular Formula : C15H17Cl2NO2S

  • Molecular Weight : 346.27

PA 09 0021016

Isopropyl 4-acetylbenzoate (Ibuprofen Impurity)

Isopropyl 4-acetylbenzoate (Ibuprofen Impurity)


  • Catalogue No.:PA 09 0021016

  • CAS :

    220089-22-5

  • Molecular Formula : C12H14O3

  • Molecular Weight : 206.24

PA 09 0021020

4-Carboxy-α-methylbenzeneacetic Acid

4-Carboxy-α-methylbenzeneacetic Acid


  • Catalogue No.:PA 09 0021020

  • CAS :

    67381-50-4

  • Molecular Formula : C10H10O4

  • Molecular Weight : 194.19

PA 09 0021025

(R)-2-(4-Isobutylphenyl)-N-((R)-1-phenylethyl)propanamide

(R)-2-(4-Isobutylphenyl)-N-((R)-1-phenylethyl)propanamide


  • Catalogue No.:PA 09 0021025

  • CAS :

    121734-80-3

  • Molecular Formula : C21H27NO

  • Molecular Weight : 309.45

PA 09 0021021

(S,S)-N-(1-Phenylethyl) Ibuprofen Amide

(S,S)-N-(1-Phenylethyl) Ibuprofen Amide


  • Catalogue No.:PA 09 0021021

  • CAS :

    81576-52-5

  • Molecular Formula : C21H27NO

  • Molecular Weight : 309.45

PA 09 0021022

(R,S)-N-(1-Phenylethyl) Ibuprofen Amide

(R,S)-N-(1-Phenylethyl) Ibuprofen Amide


  • Catalogue No.:PA 09 0021022

  • CAS :

    121734-79-0

  • Molecular Formula : C21H27NO

  • Molecular Weight : 309.45

PA 09 0021023

2-(4-Isopropylphenyl)acrylic acid

2-(4-Isopropylphenyl)acrylic acid


  • Catalogue No.:PA 09 0021023

  • CAS :

    1368714-46-8

  • Molecular Formula : C12H14O2

  • Molecular Weight : 190.24

PA 09 0021024

4'-Isopropylacetophenone

4'-Isopropylacetophenone


  • Catalogue No.:PA 09 0021024

  • CAS :

    645-13-6

  • Molecular Formula : C11H14O

  • Molecular Weight : 162.23

PA 09 0021026

1-(4-Sec-butylphenyl)ethanone

1-(4-Sec-butylphenyl)ethanone


  • Catalogue No.:PA 09 0021026

  • CAS :

    7645-81-0

  • Molecular Formula : C12H16O

  • Molecular Weight : 176.26

PA 09 0021027

1-(4-Ethylphenyl)ethan-1-one

1-(4-Ethylphenyl)ethan-1-one


  • Catalogue No.:PA 09 0021027

  • CAS :

    937-30-4

  • Molecular Formula : C10H12O

  • Molecular Weight : 148.21

PA 09 0021028

1-(4-(1-Hydroxyethyl)phenyl)-2-methylpropan-1-one

1-(4-(1-Hydroxyethyl)phenyl)-2-methylpropan-1-one


  • Catalogue No.:PA 09 0021028

  • CAS :

    NA

  • Molecular Formula : C12H16O2

  • Molecular Weight : 192.26

PA 09 0021029

1-(4-(2-Hydroxy-2-methylpropyl)phenyl)ethan-1-one

1-(4-(2-Hydroxy-2-methylpropyl)phenyl)ethan-1-one


  • Catalogue No.:PA 09 0021029

  • CAS :

    1422273-24-2

  • Molecular Formula : C12H16O2

  • Molecular Weight : 192.26

PA 09 0021030

1-(3-Hydroxy-4-isobutylphenyl)ethan-1-one

1-(3-Hydroxy-4-isobutylphenyl)ethan-1-one


  • Catalogue No.:PA 09 0021030

  • CAS :

    1198167-03-1

  • Molecular Formula : C12H16O2

  • Molecular Weight : 192.26

PA 09 0021031

Ibuprofen Sorbitol Ester (Mixture of Diastereomers)

Ibuprofen Sorbitol Ester (Mixture of Diastereomers)


  • Catalogue No.:PA 09 0021031

  • CAS :

    NA

  • Molecular Formula : C19H30O7

  • Molecular Weight : 370.4

PA 09 0021032

Ibuprofen Sorbitan Ester

Ibuprofen Sorbitan Ester


  • Catalogue No.:PA 09 0021032

  • CAS :

    NA

  • Molecular Formula : C19H28O6

  • Molecular Weight : 352.43

Ibuprofen (IPRSI011)

Ibuprofen (IPRSI011)


  • Catalogue No.:PA IPRSI011

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

Ibuprofen Impurity F (IMP/22/19)

Ibuprofen Impurity F (IMP/22/19)


  • Catalogue No.:PA IMP 22 19

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PA 09 0021033

2-Chloro-1-(4-isobutylphenyl)propan-1-one

2-Chloro-1-(4-isobutylphenyl)propan-1-one


  • Catalogue No.:PA 09 0021033

  • CAS :

    80336-66-9

  • Molecular Formula : C13H17ClO

  • Molecular Weight : 224.73

PA 09 0021034

2-(1-Chloroethyl)-2-(4-isobutylphenyl)-5,5-dimethyl-1,3-dioxane

2-(1-Chloroethyl)-2-(4-isobutylphenyl)-5,5-dimethyl-1,3-dioxane


  • Catalogue No.:PA 09 0021034

  • CAS :

    89878-72-8

  • Molecular Formula : C18H27ClO2

  • Molecular Weight : 310.86

PAI 09 002354

2-(4-Ethylphenyl)-2-hydroxypropanenitrile

2-(4-Ethylphenyl)-2-hydroxypropanenitrile


  • Catalogue No.:PAI 09 002354

  • CAS :

    1534503-70-2

  • Molecular Formula : C11H13NO

  • Molecular Weight : 175.23

PAI 09 002355

2-(4-Ethylphenyl)propanenitrile

2-(4-Ethylphenyl)propanenitrile


  • Catalogue No.:PAI 09 002355

  • CAS :

    945542-79-0

  • Molecular Formula : C11H13N

  • Molecular Weight : 159.23

PAI 09 002356

1-(4-Ethylphenyl)ethan-1-ol

1-(4-Ethylphenyl)ethan-1-ol


  • Catalogue No.:PAI 09 002356

  • CAS :

    33967-18-9

  • Molecular Formula : C10H14O

  • Molecular Weight : 150.22

PAI 09 002357

1-(1-Chloroethyl)-4-ethylbenzene

1-(1-Chloroethyl)-4-ethylbenzene


  • Catalogue No.:PAI 09 002357

  • CAS :

    13372-42-4

  • Molecular Formula : C10H13Cl

  • Molecular Weight : 168.66

PAI 09 002358

(1-(4-Ethylphenyl)ethyl)magnesium Chloride

(1-(4-Ethylphenyl)ethyl)magnesium Chloride


  • Catalogue No.:PAI 09 002358

  • CAS :

    NA

  • Molecular Formula : C10H13ClMg

  • Molecular Weight : 192.97

Ibuprofen Impurity E (IMPI023)

Ibuprofen Impurity E (IMPI023)


  • Catalogue No.:PA IMPI023

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PAI 09 002359

Methyl 2-(4-ethylphenyl)propanoate

Methyl 2-(4-ethylphenyl)propanoate


  • Catalogue No.:PAI 09 002359

  • CAS :

    65302-57-0

  • Molecular Formula : C12H16O2

  • Molecular Weight : 192.26

PA 09 0021036

(R)-3-Methyl-2-phenylbutan-1-amine

(R)-3-Methyl-2-phenylbutan-1-amine


  • Catalogue No.:PA 09 0021036

  • CAS :

    67152-35-6

  • Molecular Formula : C11H17N

  • Molecular Weight : 163.26

PA 09 0021035

(S)-Ibuprofen Methyl Ester

(S)-Ibuprofen Methyl Ester


  • Catalogue No.:PA 09 0021035

  • CAS :

    81576-55-8

  • Molecular Formula : C14H20O2

  • Molecular Weight : 220.31

PA 09 0021037

1-(4-Ethylphenyl)-2-methyl-2-propen-1-one

1-(4-Ethylphenyl)-2-methyl-2-propen-1-one


  • Catalogue No.:PA 09 0021037

  • CAS :

    70639-76-8

  • Molecular Formula : C12H14O

  • Molecular Weight : 174.24

PAI 09 002360

1-(4-Isobutylphenyl)propan-1-one

1-(4-Isobutylphenyl)propan-1-one


  • Catalogue No.:PAI 09 002360

  • CAS :

    59771-24-3

  • Molecular Formula : C13H18O

  • Molecular Weight : 190.29

PA 09 0021038

Methyl 4-acetylbenzoate

Methyl 4-acetylbenzoate


  • Catalogue No.:PA 09 0021038

  • CAS :

    3609-53-8

  • Molecular Formula : C10H10O3

  • Molecular Weight : 178.19

PA 09 0020021

Ibuprofen - Impurity B (Sodium Salt)

(2RS)-2-(4-Butylphenyl)propanoic Acid Sodium Salt


  • Catalogue No.:PA 09 0020021

  • CAS :

    NA

  • Molecular Formula : C13H17NaO2

  • Molecular Weight : 228.27