Zolpidem and its Impurities

Zolpidem improves sleep in patients with insomnia. It is aimed for use in patients with difficulties initiating sleep. It is sold under the brand name Ambien. It became available as a generic medication in 2007. Reference standards of Zolpidem API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

Displaying 36 results for Zolpidem Impurities
Drug Reference Standards & Impurity Synthesis in India
PA 26 0261000

3-(Dimethylaminomethyl)-6-methyl-2-(4-methylphenyl)imidazo[1,2-a]pyridine

3-(Dimethylaminomethyl)-6-methyl-2-(4-methylphenyl)imidazo[1,2-a]pyridine

  • Catalogue No.:PA 26 0261000

  • CAS :

    106961-33-5

  • Molecular Formula : C18H21N3

  • Molecular Weight : 279.39

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Drug Reference Standards & Impurity Synthesis in India
PA 26 0261002

N,N,N-Trimethyl-1-(6-methyl-2-(p-tolyl)imidazo[1,2-a]pyridin-3-yl)methanaminium Iodide

N,N,N-Trimethyl-1-(6-methyl-2-(p-tolyl)imidazo[1,2-a]pyridin-3-yl)methanaminium Iodide

  • Catalogue No.:PA 26 0261002

  • CAS :

    106961-34-6

  • Molecular Formula : C19H24IN3

  • Molecular Weight : 421.33

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Drug Reference Standards & Impurity Synthesis in India
PA 26 07010

Zolpidem - Impurity A

N,N-Dimethyl-2-[7-methyl-2-(4-methylphenyl)imidazo[1,2-a]pyridin-3-yl]acetamide

  • Catalogue No.:PA 26 07010

  • CAS :

    1346600-85-8

  • Molecular Formula : C19H21N3O

  • Molecular Weight : 307.39

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Drug Reference Standards & Impurity Synthesis in India
PA 26 07510

2-[6-Methyl-2-(4-methylphenyl)imidazo- [1,2-a]pyridin-3-yl]acetamide

2-[6-Methyl-2-(4-methylphenyl)imidazo- [1,2-a]pyridin-3-yl]acetamide

  • Catalogue No.:PA 26 07510

  • CAS :

    365213-58-7

  • Molecular Formula : C17H17N3O

  • Molecular Weight : 279.34

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Drug Reference Standards & Impurity Synthesis in India
PA 26 07520

2-[6-Methyl-2-(4-methylphenyl)imidazo- [1,2-a]pyridin-3-yl]acetic Acid

2-[6-Methyl-2-(4-methylphenyl)imidazo- [1,2-a]pyridin-3-yl]acetic Acid

  • Catalogue No.:PA 26 07520

  • CAS :

    189005-44-5

  • Molecular Formula : C17H16N2O2

  • Molecular Weight : 280.32

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Drug Reference Standards & Impurity Synthesis in India
PA 26 07530

Methyl 2-[6-Methyl-2-(4-methylphenyl)- imidazo[1,2-a]pyridin-3-yl]acetate

Methyl 2-[6-Methyl-2-(4-methylphenyl)- imidazo[1,2-a]pyridin-3-yl]acetate

  • Catalogue No.:PA 26 07530

  • CAS :

    258273-50-6

  • Molecular Formula : C18H18N2O2

  • Molecular Weight : 294.35

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Drug Reference Standards & Impurity Synthesis in India
PA 26 07540

6-Methyl-2-(4-methylphenyl)imidazo-[1,2-a]pyridine-3-acetonitrile

6-Methyl-2-(4-methylphenyl)imidazo-[1,2-a]pyridine-3-acetonitrile

  • Catalogue No.:PA 26 07540

  • CAS :

    768398-03-4

  • Molecular Formula : C17H15N3

  • Molecular Weight : 261.32

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Drug Reference Standards & Impurity Synthesis in India
PA 26 07550

Oxozolpidem

Oxozolpidem

  • Catalogue No.:PA 26 07550

  • CAS :

    400038-68-8

  • Molecular Formula : C19H19N3O2

  • Molecular Weight : 321.37

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Drug Reference Standards & Impurity Synthesis in India
PA 26 07560

2-[4-(Ethoxycarbonyl)phenyl]-6-methyl-imidazo[1,2-a]pyridine-3-acetic Acid

2-[4-(Ethoxycarbonyl)phenyl]-6-methyl-imidazo[1,2-a]pyridine-3-acetic Acid

  • Catalogue No.:PA 26 07560

  • CAS :

    1025962-20-2

  • Molecular Formula : C19H18N2O4

  • Molecular Weight : 338.36

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Drug Reference Standards & Impurity Synthesis in India
PA 26 07570

2-[4-(Ethoxycarbonyl)phenyl]-6-methyl-imidazo[1,2-a]pyridine

2-[4-(Ethoxycarbonyl)phenyl]-6-methyl-imidazo[1,2-a]pyridine

  • Catalogue No.:PA 26 07570

  • CAS :

    109461-69-0

  • Molecular Formula : C17H16N2O2

  • Molecular Weight : 280.32

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Drug Reference Standards & Impurity Synthesis in India
PA 26 07620

4-Methyl-N-(5-methyl-2-pyridinyl)benzamide

4-Methyl-N-(5-methyl-2-pyridinyl)benzamide

  • Catalogue No.:PA 26 07620

  • CAS :

    349122-64-1

  • Molecular Formula : C14H14N2O

  • Molecular Weight : 226.27

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Drug Reference Standards & Impurity Synthesis in India
PA 26 07630

Zolpidem Carbaldehyde

Zolpidem Carbaldehyde

  • Catalogue No.:PA 26 07630

  • CAS :

    400777-11-9

  • Molecular Formula : C16H14N2O

  • Molecular Weight : 250.3

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Drug Reference Standards & Impurity Synthesis in India
PA 26 07640

N,N-Dimethyl-2-(6-methyl-2-(3-bromo-4-methylphenyl)-imidazo[1,2-a]pyridin-3-yl)-acetamide

N,N-Dimethyl-2-(6-methyl-2-(3-bromo-4-methylphenyl)-imidazo[1,2-a]pyridin-3-yl)-acetamide

  • Catalogue No.:PA 26 07640

  • CAS :

    NA

  • Molecular Formula : C19H20BrN3O

  • Molecular Weight : 386.29

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Drug Reference Standards & Impurity Synthesis in India
PA 26 07660

α-Hydroxyzolpidem

α-Hydroxyzolpidem

  • Catalogue No.:PA 26 07660

  • CAS :

    118026-14-5

  • Molecular Formula : C19H21N3O2

  • Molecular Weight : 323.39

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Drug Reference Standards & Impurity Synthesis in India
PA 26 07670

Zolpidem 6-Carboxylic Acid

Zolpidem 6-Carboxylic Acid

  • Catalogue No.:PA 26 07670

  • CAS :

    109461-15-6

  • Molecular Formula : C19H19N3O3

  • Molecular Weight : 337.37

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Drug Reference Standards & Impurity Synthesis in India
PA 26 07680

Zolpidem Phenyl-4-carboxylic Acid

Zolpidem Phenyl-4-carboxylic Acid

  • Catalogue No.:PA 26 07680

  • CAS :

    109461-65-6

  • Molecular Formula : C19H19N3O3

  • Molecular Weight : 337.37

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Drug Reference Standards & Impurity Synthesis in India
PA 26 07690

Zolpidem Phenyl-4-carboxylic Acid Ethyl Ester

Zolpidem Phenyl-4-carboxylic Acid Ethyl Ester

  • Catalogue No.:PA 26 07690

  • CAS :

    1026465-13-3

  • Molecular Formula : C21H23N3O3

  • Molecular Weight : 365.43

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Drug Reference Standards & Impurity Synthesis in India
PA 26 07700

Zolpidem 6-Carboxylic Acid Methyl Ester

Zolpidem 6-Carboxylic Acid Methyl Ester

  • Catalogue No.:PA 26 07700

  • CAS :

    917252-81-4

  • Molecular Formula : C20H21N3O3

  • Molecular Weight : 351.4

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Drug Reference Standards & Impurity Synthesis in India
PA BP1065RB

zolpidem impurity A (1065RB)

zolpidem impurity A (1065RB)

  • Catalogue No.:PA BP1065RB

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA EPZ2500010

Zolpidem impurity A (Z2500010)

Zolpidem impurity A (Z2500010)

  • Catalogue No.:PA EPZ2500010

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA STI 033620

3-(Dimethylaminomethyl)-6-methyl-2-(4-methylphenyl)imidazo[1,2-a]pyridine-d6

3-(Dimethylaminomethyl)-6-methyl-2-(4-methylphenyl)imidazo[1,2-a]pyridine-d6

  • Catalogue No.:PA STI 033620

  • CAS :

    NA

  • Molecular Formula : C18H15D6N3

  • Molecular Weight : 285.42

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Drug Reference Standards & Impurity Synthesis in India
PA STI 055310

2-Keto Zolpidem-d6

2-Keto Zolpidem-d6

  • Catalogue No.:PA STI 055310

  • CAS :

    1330165-18-8

  • Molecular Formula : C19H13D6N3O2

  • Molecular Weight : 327.41

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Drug Reference Standards & Impurity Synthesis in India
PA STI 062510

4-Methyl-N-(5-methyl-2-pyridinyl)benzamide-d6

4-Methyl-N-(5-methyl-2-pyridinyl)benzamide-d6

  • Catalogue No.:PA STI 062510

  • CAS :

    1330277-06-9

  • Molecular Formula : C14H8D6N2O

  • Molecular Weight : 232.31

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Drug Reference Standards & Impurity Synthesis in India
PA STI 062780

6-Methyl-2-(4-methylphenyl)-imidazo[1,2-a]pyridine-d6

6-Methyl-2-(4-methylphenyl)-imidazo[1,2-a]pyridine-d6

  • Catalogue No.:PA STI 062780

  • CAS :

    959605-52-8

  • Molecular Formula : C15H8D6N2

  • Molecular Weight : 228.32

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Drug Reference Standards & Impurity Synthesis in India
PA STI 087860

Zolpidem-d6 6-Carboxylic Acid

Zolpidem-d6 6-Carboxylic Acid

  • Catalogue No.:PA STI 087860

  • CAS :

    1190014-62-0

  • Molecular Formula : C19H13D6N3O3

  • Molecular Weight : 343.41

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Drug Reference Standards & Impurity Synthesis in India
PA STI 087870

Zolpidem-d6 Phenyl-4-carboxylic Acid

Zolpidem-d6 Phenyl-4-carboxylic Acid

  • Catalogue No.:PA STI 087870

  • CAS :

    1189868-12-9

  • Molecular Formula : C19H13D6N3O3

  • Molecular Weight : 343.41

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Drug Reference Standards & Impurity Synthesis in India
PA STI 087880

Zolpidem Phenyl-4-carboxylic Acid Ethyl Ester-d6

Zolpidem Phenyl-4-carboxylic Acid Ethyl Ester-d6

  • Catalogue No.:PA STI 087880

  • CAS :

    1216455-48-9

  • Molecular Formula : C21H17D6N3O3

  • Molecular Weight : 371.46

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Drug Reference Standards & Impurity Synthesis in India
PA STI 087890

Zolpidem-d6 6-Carboxylic Acid Methyl Ester

Zolpidem-d6 6-Carboxylic Acid Methyl Ester

  • Catalogue No.:PA STI 087890

  • CAS :

    1215767-20-6

  • Molecular Formula : C20H15D6N3O3

  • Molecular Weight : 357.44

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Drug Reference Standards & Impurity Synthesis in India
PA STI 087900

Zolpidem Carbaldehyde-d6

Zolpidem Carbaldehyde-d6

  • Catalogue No.:PA STI 087900

  • CAS :

    1329611-32-6

  • Molecular Formula : C16H8D6N2O

  • Molecular Weight : 256.33

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Drug Reference Standards & Impurity Synthesis in India
PAI 26 001010

N,N-Dimethyl-3-((4-methylpyridin-2-yl)amino)-4-oxo-4-(p-tolyl)butanamide

N,N-Dimethyl-3-((4-methylpyridin-2-yl)amino)-4-oxo-4-(p-tolyl)butanamide

  • Catalogue No.:PAI 26 001010

  • CAS :

    NA

  • Molecular Formula : C19H23N3O2

  • Molecular Weight : 325.4

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Drug Reference Standards & Impurity Synthesis in India
PAI 26 001020

N,N-Dimethyl-2-(7-methyl-2-(p-tolyl)imidazo[1,2-a]pyridin-3-yl)acetamide

N,N-Dimethyl-2-(7-methyl-2-(p-tolyl)imidazo[1,2-a]pyridin-3-yl)acetamide

  • Catalogue No.:PAI 26 001020

  • CAS :

    1346600-85-8

  • Molecular Formula : C19H21N3O

  • Molecular Weight : 307.39

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Drug Reference Standards & Impurity Synthesis in India
PAI 26 001030

6-Methyl-2-(4-methylphenyl)-imidazo[1,2-a]pyridine

6-Methyl-2-(4-methylphenyl)-imidazo[1,2-a]pyridine

  • Catalogue No.:PAI 26 001030

  • CAS :

    88965-00-8

  • Molecular Formula : C15H14N2

  • Molecular Weight : 222.29

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Drug Reference Standards & Impurity Synthesis in India
PAI 26 001031

2-(7-Methyl-2-(p-tolyl)imidazo[1,2-a]pyridin-3-yl)acetic acid

2-(7-Methyl-2-(p-tolyl)imidazo[1,2-a]pyridin-3-yl)acetic acid

  • Catalogue No.:PAI 26 001031

  • CAS :

    387400-34-2

  • Molecular Formula : C17H16N2O2

  • Molecular Weight : 280.33

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Drug Reference Standards & Impurity Synthesis in India
PA STI 087851

Zolpidem-d6(psy)

Zolpidem-d6(psy)

  • Catalogue No.:PA STI 087851

  • CAS :

    959605-90-4

  • Molecular Formula : C19H15D6N3O

  • Molecular Weight : 313.43

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Drug Reference Standards & Impurity Synthesis in India
PA 26 0261003

N-Methyl-N-(2-(6-methyl-2-(p-tolyl)imidazo[1,2-a]pyridin-3-yl)ethyl)nitrous amide

N-Methyl-N-(2-(6-methyl-2-(p-tolyl)imidazo[1,2-a]pyridin-3-yl)ethyl)nitrous amide

  • Catalogue No.:PA 26 0261003

  • CAS :

    NA

  • Molecular Formula : C18H20N4O

  • Molecular Weight : 308.39

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Drug Reference Standards & Impurity Synthesis in India
PA EP Y0002139

Zolpidem For System Suitability (PSY) (Y0002139)

Zolpidem For System Suitability (PSY) (Y0002139)

  • Catalogue No.:PA EP Y0002139

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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