levetiracetam and its Impurities

It is a biologically active (S)-enantiomer of Etiracetam which is used in the treatment of epilepsy. It is an effective medicine in treating other psychiatric and neurologic conditions. Reference standards of Levetiracetam API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

Displaying 68 results for levetiracetam Impurities
PA 12 10000

Levetiracetam

Levetiracetam

  • Catalogue No.:PA 12 10000

  • CAS :

    102767-28-2

  • Molecular Formula : C8H14N2O2

  • Molecular Weight : 170.21

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PA 12 10010

Levetiracetam - Impurity A

(2RS)-2-(2-Oxopyrrolidin-1-yl)butanoic Acid

  • Catalogue No.:PA 12 10010

  • CAS :

    67118-31-4

  • Molecular Formula : C8H13NO3

  • Molecular Weight : 171.19

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PA 12 10020

Levetiracetam - Impurity B

(2Z)-2-(2-Oxopyrrolidin-1-yl)but-2-enamide

  • Catalogue No.:PA 12 10020

  • CAS :

    358629-47-7

  • Molecular Formula : C8H12N2O2

  • Molecular Weight : 168.19

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PA 12 10030

Levetiracetam - Impurity C

2-Pyridinol

  • Catalogue No.:PA 12 10030

  • CAS :

    142-08-5

  • Molecular Formula : C5H5NO

  • Molecular Weight : 95.10

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PA 12 10040

Levetiracetam - Impurity D

(R)-Etiracetam

  • Catalogue No.:PA 12 10040

  • CAS :

    103765-01-1

  • Molecular Formula : C8H14N2O2

  • Molecular Weight : 170.21

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PA 12 10050

Levetiracetam - Impurity E (Freebase)

(1R)-1-phenylethanamine

  • Catalogue No.:PA 12 10050

  • CAS :

    3886-69-9

  • Molecular Formula : C8H11N

  • Molecular Weight : 121.18

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PA 12 10051

Levetiracetam - Impurity E (Hydrochloride Salt)

(1R)-1-Phenylethan-1-amine Hydrochloride

  • Catalogue No.:PA 12 10051

  • CAS :

    10277-86-8

  • Molecular Formula : C8H12ClN

  • Molecular Weight : 157.64

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PA 12 10070

Levetiracetam - Impurity G (Freebase)

(2S)-2-Aminobutanamide

  • Catalogue No.:PA 12 10070

  • CAS :

    7324-11-0

  • Molecular Formula : C4H10N2O

  • Molecular Weight : 102.13

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PA 12 10510

(S)-N-(1-Amino-1-oxobutan-2-yl)-4-chlorobutanamide

(S)-N-(1-Amino-1-oxobutan-2-yl)-4-chlorobutanamide

  • Catalogue No.:PA 12 10510

  • CAS :

    102767-31-7

  • Molecular Formula : C8H15ClN2O2

  • Molecular Weight : 206.67

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PA 12 10520

Levetiracetam - Impurity G (Hydrochloride Salt)

(S)-2-Aminobutanamide Hydrochloride

  • Catalogue No.:PA 12 10520

  • CAS :

    7682-20-4

  • Molecular Formula : C4H11ClN2O

  • Molecular Weight : 138.6

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PA 12 10530

Levetiracetam Racemic Mixture

Levetiracetam Racemic Mixture

  • Catalogue No.:PA 12 10530

  • CAS :

    33996-58-6

  • Molecular Formula : C8H14N2O2

  • Molecular Weight : 170.21

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PA 12 10540

Levetiracetam Carboxylic Acid

Levetiracetam Carboxylic Acid

  • Catalogue No.:PA 12 10540

  • CAS :

    102849-49-0

  • Molecular Formula : C8H13NO3

  • Molecular Weight : 171.19

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PA 12 10550

N-(1-Amino-1-oxobutan-2-yl)-4-chlorobutanamide

N-(1-Amino-1-oxobutan-2-yl)-4-chlorobutanamide

  • Catalogue No.:PA 12 10550

  • CAS :

    774604-48-7

  • Molecular Formula : C8H15ClN2O2

  • Molecular Weight : 206.67

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PA 12 10560

(R)-Levetiracetam Acid

(R)-Levetiracetam Acid

  • Catalogue No.:PA 12 10560

  • CAS :

    103833-72-3

  • Molecular Formula : C8H13NO3

  • Molecular Weight : 171.19

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PA 12 10570

L-2-Aminobutyric Acid Methyl Ester Hydrochloride

L-2-Aminobutyric Acid Methyl Ester Hydrochloride

  • Catalogue No.:PA 12 10570

  • CAS :

    56545-22-3

  • Molecular Formula : C5H12ClNO2

  • Molecular Weight : 153.61

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PA 12 10580

(S)-Methyl 2-(2-oxopyrrolidin-1-yl)butanoate

(S)-Methyl 2-(2-oxopyrrolidin-1-yl)butanoate

  • Catalogue No.:PA 12 10580

  • CAS :

    358629-51-3

  • Molecular Formula : C9H15NO3

  • Molecular Weight : 185.22

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PA 12 10590

(S)-2-Aminobutanoic Acid Hydrochloride

(S)-2-Aminobutanoic Acid Hydrochloride

  • Catalogue No.:PA 12 10590

  • CAS :

    5959-29-5

  • Molecular Formula : C4H10ClNO2

  • Molecular Weight : 139.58

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PA STI 006860

(S)-N-(1-Amino-1-oxobutan-2-yl)-4-chlorobutanamide-d3

(S)-N-(1-Amino-1-oxobutan-2-yl)-4-chlorobutanamide-d3

  • Catalogue No.:PA STI 006860

  • CAS :

    1795786-85-4

  • Molecular Formula : C8H12D3ClN2O2

  • Molecular Weight : 209.69

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PA STI 006870

(S)-N-(1-Amino-1-oxobutan-2-yl)-4-chlorobutanamide-d6

(S)-N-(1-Amino-1-oxobutan-2-yl)-4-chlorobutanamide-d6

  • Catalogue No.:PA STI 006870

  • CAS :

    NA

  • Molecular Formula : C8H9D6ClN2O2

  • Molecular Weight : 212.71

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PA STI 056450

(-)-Levetiracetam-d3

(-)-Levetiracetam-d3

  • Catalogue No.:PA STI 056450

  • CAS :

    1217851-16-5

  • Molecular Formula : C8H11D3N2O2

  • Molecular Weight : 173.23

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PA STI 056460

Levetiracetam-d6 See L331502

Levetiracetam-d6 See L331502

  • Catalogue No.:PA STI 056460

  • CAS :

    1133229-30-7

  • Molecular Formula : C8H8D6N2O2

  • Molecular Weight : 176.25

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PA EPY0001253

Levetiracetam (Y0001253)

Levetiracetam (Y0001253)

  • Catalogue No.:PA EPY0001253

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA EPY0001254

Levetiracetam impurity A (Y0001254)

Levetiracetam impurity A (Y0001254)

  • Catalogue No.:PA EPY0001254

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA EPY0001255

Levetiracetam impurity B (Y0001255)

Levetiracetam impurity B (Y0001255)

  • Catalogue No.:PA EPY0001255

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA EPY0001256

Levetiracetam impurity C (Y0001256)

Levetiracetam impurity C (Y0001256)

  • Catalogue No.:PA EPY0001256

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA EPY0001257

Levetiracetam impurity D (Y0001257)

Levetiracetam impurity D (Y0001257)

  • Catalogue No.:PA EPY0001257

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA USP1359404

Levetiracetam (1359404)

Levetiracetam (1359404)

  • Catalogue No.:PA USP1359404

  • CAS :

    102767-28-2

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA USP1359415

Levetiracetam Racemic Mixture (1:1 mixture of levetiracetam S-enantiomer-(2S)-2-(2-oxopyrrolidin-1- (1359415)

Levetiracetam Racemic Mixture (1:1 mixture of levetiracetam S-enantiomer-(2S)-2-(2-oxopyrrolidin-1- (1359415)

  • Catalogue No.:PA USP1359415

  • CAS :

    33996-58-6

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA USP1359426

Levetiracetam Related Compound A ((S)-N-(1-amino-1-oxobutan-2-yl)-4-chlorobutanamide) (1359426)

Levetiracetam Related Compound A ((S)-N-(1-amino-1-oxobutan-2-yl)-4-chlorobutanamide) (1359426)

  • Catalogue No.:PA USP1359426

  • CAS :

    102767-31-7

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA USP1359437

Levetiracetam Related Compound B ((S)-2-aminobutanamide hydrochloride) (1359437)

Levetiracetam Related Compound B ((S)-2-aminobutanamide hydrochloride) (1359437)

  • Catalogue No.:PA USP1359437

  • CAS :

    7682-20-4

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA STI 088341

Levetiracetam-d6 (2,3,3,4,4,4-butyramide-d6)

Levetiracetam-d6 (2,3,3,4,4,4-butyramide-d6)

  • Catalogue No.:PA STI 088341

  • CAS :

    1133229-29-4

  • Molecular Formula : C8H8D6N2O2

  • Molecular Weight : 176.25

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PA 12 0101000

2,4-Dichlorobutanoyl Chloride

2,4-Dichlorobutanoyl Chloride

  • Catalogue No.:PA 12 0101000

  • CAS :

    79194-54-0

  • Molecular Formula : C4H5Cl3O

  • Molecular Weight : 175.43

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PA 12 0101001

(R)-N-((R)-1-Amino-1-oxobutan-2-yl)-3-((((S)-1-amino-1-oxobutan-2-yl)amino)methyl)hexanamide

(R)-N-((R)-1-Amino-1-oxobutan-2-yl)-3-((((S)-1-amino-1-oxobutan-2-yl)amino)methyl)hexanamide

  • Catalogue No.:PA 12 0101001

  • CAS :

    NA

  • Molecular Formula : C15H30N4O3

  • Molecular Weight : 314.43

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PAI 12 010001

(Z)-2-(2-Oxopyrrolidin-1-yl)but-2-enoic Acid

(Z)-2-(2-Oxopyrrolidin-1-yl)but-2-enoic Acid

  • Catalogue No.:PAI 12 010001

  • CAS :

    358629-39-7

  • Molecular Formula : C8H11NO3

  • Molecular Weight : 169.18

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PA 12 0101002

L-Aminobutyric Acid

L-Aminobutyric Acid

  • Catalogue No.:PA 12 0101002

  • CAS :

    1492-24-6

  • Molecular Formula : C4H9NO2

  • Molecular Weight : 103.12

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PA 12 0101003

4-Chlorobutanoyl Chloride

4-Chlorobutanoyl Chloride

  • Catalogue No.:PA 12 0101003

  • CAS :

    4635-59-0

  • Molecular Formula : C4H6Cl2O

  • Molecular Weight : 140.99

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PA 12 0101004

Ethyl (S)-2-(2-oxopyrrolidin-1-yl)butanoate

Ethyl (S)-2-(2-oxopyrrolidin-1-yl)butanoate

  • Catalogue No.:PA 12 0101004

  • CAS :

    358629-53-5

  • Molecular Formula : C10H17NO3

  • Molecular Weight : 199.25

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PA 12 0101005

Isobutyl (S)-2-(2-oxopyrrolidin-1-yl)butanoate

Isobutyl (S)-2-(2-oxopyrrolidin-1-yl)butanoate

  • Catalogue No.:PA 12 0101005

  • CAS :

    2273884-56-1

  • Molecular Formula : C12H21NO3

  • Molecular Weight : 227.3

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PA 12 0101010

2-Aminobutanamide hydrochloride

2-Aminobutanamide hydrochloride

  • Catalogue No.:PA 12 0101010

  • CAS :

    89603-48-5

  • Molecular Formula : C4H11ClN2O

  • Molecular Weight : 138.6

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PA 12 0101006

(S)-2-Amino-N-((R)-1-amino-1-oxobutan-2-yl)butanamide

(S)-2-Amino-N-((R)-1-amino-1-oxobutan-2-yl)butanamide

  • Catalogue No.:PA 12 0101006

  • CAS :

    1844123-52-9

  • Molecular Formula : C8H17N3O2

  • Molecular Weight : 187.24

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PA 12 0101007

(R)-N-(1-Amino-1-oxobutan-2-yl)-4-hydroxybutanamide

(R)-N-(1-Amino-1-oxobutan-2-yl)-4-hydroxybutanamide

  • Catalogue No.:PA 12 0101007

  • CAS :

    1847568-87-9

  • Molecular Formula : C8H16N2O3

  • Molecular Weight : 188.23

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PA 12 0101008

(R)-2-Amino-N-((R)-1-amino-1-oxobutan-2-yl)butanamide

(R)-2-Amino-N-((R)-1-amino-1-oxobutan-2-yl)butanamide

  • Catalogue No.:PA 12 0101008

  • CAS :

    1867585-44-1

  • Molecular Formula : C8H17N3O2

  • Molecular Weight : 187.24

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PA 12 0101009

(S)-N-(1-Amino-1-oxobutan-2-yl)-4-hydroxybutanamide

(S)-N-(1-Amino-1-oxobutan-2-yl)-4-hydroxybutanamide

  • Catalogue No.:PA 12 0101009

  • CAS :

    1868118-63-1

  • Molecular Formula : C8H16N2O3

  • Molecular Weight : 188.23

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PA Y0001948

Levetiracetam Impurity G (Y0001948)

Levetiracetam Impurity G (Y0001948)

  • Catalogue No.:PA Y0001948

  • CAS :

    7682-20-4

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA Y0001962

Levetiracetam Impurity E (Y0001962)

Levetiracetam Impurity E (Y0001962)

  • Catalogue No.:PA Y0001962

  • CAS :

    13437-79-1

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA IMPL025

Levetiracetam Impurity A (IMPL025)

Levetiracetam Impurity A (IMPL025)

  • Catalogue No.:PA IMPL025

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA IMPL030

Levetiracetam Impurity B (IMPL030)

Levetiracetam Impurity B (IMPL030)

  • Catalogue No.:PA IMPL030

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA IMPL029

Levetiracetam Acid (IMPL029)

Levetiracetam Acid (IMPL029)

  • Catalogue No.:PA IMPL029

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA 12 0101011

(S)-N-(1-Amino-1-oxobutan-2-yl)-4-hydroxy-N-nitrosobutanamide

(S)-N-(1-Amino-1-oxobutan-2-yl)-4-hydroxy-N-nitrosobutanamide

  • Catalogue No.:PA 12 0101011

  • CAS :

    NA

  • Molecular Formula : C8H15N3O4

  • Molecular Weight : 217.23

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PA IPRSL027

Levetiracetam (IPRSL027)

Levetiracetam (IPRSL027)

  • Catalogue No.:PA IPRSL027

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA 12 0101012

(2S)-2-(3-Chloro-2-oxopyrrolidin-1-yl)butanamide

(2S)-2-(3-Chloro-2-oxopyrrolidin-1-yl)butanamide

  • Catalogue No.:PA 12 0101012

  • CAS :

    2245069-23-0

  • Molecular Formula : C8H13ClN2O2

  • Molecular Weight : 204.65

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PA 12 0101013

(S)-2-(2-Oxopyrrolidin-1-yl)butanenitrile

(S)-2-(2-Oxopyrrolidin-1-yl)butanenitrile

  • Catalogue No.:PA 12 0101013

  • CAS :

    664304-29-4

  • Molecular Formula : C8H12N2O

  • Molecular Weight : 152.2

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PA 12 0101014

Ethyl 2-(2-oxopyrrolidin-1-yl)butanoate

Ethyl 2-(2-oxopyrrolidin-1-yl)butanoate

  • Catalogue No.:PA 12 0101014

  • CAS :

    86815-10-3

  • Molecular Formula : C10H17NO3

  • Molecular Weight : 199.25

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PA 12 0101015

Isopropyl (S)-2-(2-oxopyrrolidin-1-yl)butanoate

Isopropyl (S)-2-(2-oxopyrrolidin-1-yl)butanoate

  • Catalogue No.:PA 12 0101015

  • CAS :

    1031436-47-1

  • Molecular Formula : C11H19NO3

  • Molecular Weight : 213.28

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PA IMPL026

Levetiracetam Impurity D (IMPL026)

Levetiracetam Impurity D (IMPL026)

  • Catalogue No.:PA IMPL026

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA IMPL021

Levetiracetam Impurity C (Pyridine-2-ol) (IMPL021)

Levetiracetam Impurity C (Pyridine-2-ol) (IMPL021)

  • Catalogue No.:PA IMPL021

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA 12 0101016

4-((1-Carboxypropyl)(nitroso)amino)butanoic Acid

4-((1-Carboxypropyl)(nitroso)amino)butanoic Acid

  • Catalogue No.:PA 12 0101016

  • CAS :

    NA

  • Molecular Formula : C8H14N2O5

  • Molecular Weight : 218.21

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PA 12 0101017

(S)-N-(1-Amino-1-oxobutan-2-yl)-4-chloro-N-nitrosobutanamide

(S)-N-(1-Amino-1-oxobutan-2-yl)-4-chloro-N-nitrosobutanamide

  • Catalogue No.:PA 12 0101017

  • CAS :

    NA

  • Molecular Formula : C8H14ClN3O3

  • Molecular Weight : 235.67

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PA 12 0101018

(S)-2-(Methylamino)butanamide

(S)-2-(Methylamino)butanamide

  • Catalogue No.:PA 12 0101018

  • CAS :

    1315051-69-4

  • Molecular Formula : C5H12N2O

  • Molecular Weight : 116.16

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PA 12 0101019

(S)-2-(Dimethylamino)butanamide

(S)-2-(Dimethylamino)butanamide

  • Catalogue No.:PA 12 0101019

  • CAS :

    2382619-96-5

  • Molecular Formula : C6H14N2O

  • Molecular Weight : 130.19

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PA 12 0101020

(S)-4-((1-Amino-1-oxobutan-2-yl)amino)butanoic Acid

(S)-4-((1-Amino-1-oxobutan-2-yl)amino)butanoic Acid

  • Catalogue No.:PA 12 0101020

  • CAS :

    429674-11-3

  • Molecular Formula : C8H16N2O3

  • Molecular Weight : 188.23

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PA 12 0101021

2-(2-Oxopiperidin-1-yl)butanamide

2-(2-Oxopiperidin-1-yl)butanamide

  • Catalogue No.:PA 12 0101021

  • CAS :

    172171-68-5

  • Molecular Formula : C9H16N2O2

  • Molecular Weight : 184.24

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PA BSC 01012891

L-Aminobutyric Acid (BSC)

L-Aminobutyric Acid

  • Catalogue No.:PA BSC 01012891

  • CAS :

    1492-24-6

  • Molecular Formula : C4H9NO2

  • Molecular Weight : 103.12

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PA BSC 01012929

4-Chlorobutanoyl Chloride (BSC)

4-Chlorobutanoyl Chloride

  • Catalogue No.:PA BSC 01012929

  • CAS :

    4635-59-0

  • Molecular Formula : C4H6Cl2O

  • Molecular Weight : 140.99

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PA 12 0101022

(Ethyl carbonic) 2-(2-oxopyrrolidin-1-yl)butanoic Anhydride

(Ethyl carbonic) 2-(2-oxopyrrolidin-1-yl)butanoic Anhydride

  • Catalogue No.:PA 12 0101022

  • CAS :

    NA

  • Molecular Formula : C11H17NO5

  • Molecular Weight : 243.26

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PA 12 0101023

2-(2-Oxopyrrolidin-1-yl)butanoic Anhydride

2-(2-Oxopyrrolidin-1-yl)butanoic Anhydride

  • Catalogue No.:PA 12 0101023

  • CAS :

    NA

  • Molecular Formula : C16H24N2O5

  • Molecular Weight : 324.38

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PA IMPL049

Levetiracetam Impurity B (IMPL049)

Levetiracetam Impurity B (IMPL049)

  • Catalogue No.:PA IMPL049

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA BP 1310

Levetiracetam (1310)

Levetiracetam (1310)

  • Catalogue No.:PA BP 1310

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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