theophylline and its Impurities

A methyl xanthine derivative, Theophylline is used in the treatment of chronic obstructive pulmonary disease (COPD) and asthma .A competitive nonselective phosphodiesterase inhibitor, Theohylline is found naturally in cocoa plant.Reference standards of Theophylline API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

Displaying 46 results for theophylline Impurities
Drug Reference Standards & Impurity Synthesis in India
PA 20 25000

Theophylline

Theophylline

  • Catalogue No.:PA 20 25000

  • CAS :

    58-55-9

  • Molecular Formula : C7H8N4O2

  • Molecular Weight : 180.16

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Drug Reference Standards & Impurity Synthesis in India
PA 20 25010

Theophylline - Impurity A

Caffeine

  • Catalogue No.:PA 20 25010

  • CAS :

    58-08-2

  • Molecular Formula : C8H10N4O2

  • Molecular Weight : 194.19

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Drug Reference Standards & Impurity Synthesis in India
PA 20 25020

Theophylline - Impurity B

3-Methyl-3,7-dihydro-1H-purine-2,6-dione

  • Catalogue No.:PA 20 25020

  • CAS :

    1076-22-8

  • Molecular Formula : C6H6N4O2

  • Molecular Weight : 166.14

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Drug Reference Standards & Impurity Synthesis in India
PA 20 25030

Theophylline - Impurity C

N-(6-amino-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)formamide

  • Catalogue No.:PA 20 25030

  • CAS :

    7597-60-6

  • Molecular Formula : C7H10N4O3

  • Molecular Weight : 198.18

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Drug Reference Standards & Impurity Synthesis in India
PA 20 25040

Theophylline - Impurity D (Hydrochloride Salt)

Theophyllidine Hydrochloride

  • Catalogue No.:PA 20 25040

  • CAS :

    116131-08-9

  • Molecular Formula : C6H11ClN4O

  • Molecular Weight : 190.63

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Drug Reference Standards & Impurity Synthesis in India
PA 20 25050

Theophylline - Impurity E

1,3-Dimethyl-7,9-dihydro-1H-purine-2,6,8(3H)-trione

  • Catalogue No.:PA 20 25050

  • CAS :

    944-73-0

  • Molecular Formula : C7H8N4O3

  • Molecular Weight : 196.16

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Drug Reference Standards & Impurity Synthesis in India
PA 20 25060

Theophylline - Impurity F

Etofylline

  • Catalogue No.:PA 20 25060

  • CAS :

    519-37-9

  • Molecular Formula : C9H12N4O3

  • Molecular Weight : 224.22

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Drug Reference Standards & Impurity Synthesis in India
PA 20 25510

1-Methyl Xanthine

1-Methyl Xanthine

  • Catalogue No.:PA 20 25510

  • CAS :

    6136-37-4

  • Molecular Formula : C6H6N4O2

  • Molecular Weight : 166.14

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Drug Reference Standards & Impurity Synthesis in India
PA 20 25520

7-Methyl Xanthine

7-Methyl Xanthine

  • Catalogue No.:PA 20 25520

  • CAS :

    552-62-5

  • Molecular Formula : C6H6N4O2

  • Molecular Weight : 166.14

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Drug Reference Standards & Impurity Synthesis in India
PA 20 25530

7-Ethyl Theophylline

7-Ethyl Theophylline

  • Catalogue No.:PA 20 25530

  • CAS :

    23043-88-1

  • Molecular Formula : C9H12N4O2

  • Molecular Weight :  208.22

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Drug Reference Standards & Impurity Synthesis in India
PA 20 25540

1-Methyluric Acid

1-Methyluric Acid

  • Catalogue No.:PA 20 25540

  • CAS :

    708-79-2

  • Molecular Formula : C6H6N4O3

  • Molecular Weight : 182.14

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Drug Reference Standards & Impurity Synthesis in India
PA STI 064800

1-Methyluric Acid-d3

1-Methyluric Acid-d3

  • Catalogue No.:PA STI 064800

  • CAS :

    1189480-64-5

  • Molecular Formula : C6H3D3N4O3

  • Molecular Weight : 185.16

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Drug Reference Standards & Impurity Synthesis in India
PA STI 082610

Theophylline-1,3-15N2,13C

Theophylline-1,3-15N2,13C

  • Catalogue No.:PA STI 082610

  • CAS :

    1246816-25-0

  • Molecular Formula : C613CH8N215N2O2

  • Molecular Weight : 183.14

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Drug Reference Standards & Impurity Synthesis in India
PA STI 082620

Theophylline-d6

Theophylline-d6

  • Catalogue No.:PA STI 082620

  • CAS :

    117490-39-8

  • Molecular Formula : C7H2D6N4O2

  • Molecular Weight : 186.20

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Drug Reference Standards & Impurity Synthesis in India
PA STI 082630

Theophylline-13C2d6

Theophylline-13C2d6

  • Catalogue No.:PA STI 082630

  • CAS :

    1782458-84-7

  • Molecular Formula : C513C2H2D6N4O2

  • Molecular Weight : 188.19

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Drug Reference Standards & Impurity Synthesis in India
PA IPIPRS 13 14

Etophylline (IPRS/13/14)-from IPC

Etophylline (IPRS/13/14)-from IPC

  • Catalogue No.:PA IPIPRS 13 14

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA IPIPRS 155 12

Theophylline (IPRS/155/12)-from IPC

Theophylline (IPRS/155/12)-from IPC

  • Catalogue No.:PA IPIPRS 155 12

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA EPT0800000

Theophylline (T0800000)

Theophylline (T0800000)

  • Catalogue No.:PA EPT0800000

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA EPY0000294

Theophylline - reference spectrum (Y0000294)

Theophylline - reference spectrum (Y0000294)

  • Catalogue No.:PA EPY0000294

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA USP1077708

8-Bromotheophylline (1077708)

8-Bromotheophylline (1077708)

  • Catalogue No.:PA USP1077708

  • CAS :

    10381-75-6

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA USP1653004

Theophylline (1653004)

Theophylline (1653004)

  • Catalogue No.:PA USP1653004

  • CAS :

    58-55-9

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA USP1653026

Theophylline Related Compound B (3-Methyl-1H-purine-2,6-dione) (1653026)

Theophylline Related Compound B (3-Methyl-1H-purine-2,6-dione) (1653026)

  • Catalogue No.:PA USP1653026

  • CAS :

    1076-22-8

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA USP1653037

Theophylline Related Compound C (N-(6-Amino-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl (1653037)

Theophylline Related Compound C (N-(6-Amino-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl (1653037)

  • Catalogue No.:PA USP1653037

  • CAS :

    7597-60-6

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA USP1653048

Theophylline Related Compound D (N-Methyl-5-(methylamino)-1H-imidazole-4-carboxamide hydrochloride (1653048)

Theophylline Related Compound D (N-Methyl-5-(methylamino)-1H-imidazole-4-carboxamide hydrochloride (1653048)

  • Catalogue No.:PA USP1653048

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA USP1653060

Theophylline Related Compound F (7-(2-Hydroxyethyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione) (1653060)

Theophylline Related Compound F (7-(2-Hydroxyethyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione) (1653060)

  • Catalogue No.:PA USP1653060

  • CAS :

    519-37-9

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA USP1653117

Theophylline Melting Point Standard (Approximately 271 degrees) (1653117)

Theophylline Melting Point Standard (Approximately 271 degrees) (1653117)

  • Catalogue No.:PA USP1653117

  • CAS :

    58-55-9

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA BP327RB

theophylline (327RB)

theophylline (327RB)

  • Catalogue No.:PA BP327RB

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0251000

1-Bromoethyl Acetate

1-Bromoethyl Acetate

  • Catalogue No.:PA 20 0251000

  • CAS :

    40258-78-4

  • Molecular Formula : C4H7BrO2

  • Molecular Weight : 167

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0251001

2-Bromoethyl Acetate

2-Bromoethyl Acetate

  • Catalogue No.:PA 20 0251001

  • CAS :

    927-68-4

  • Molecular Formula : C4H7BrO2

  • Molecular Weight : 167

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0251002

Ethyl (Z)-3-acetoxybut-2-enoate

Ethyl (Z)-3-acetoxybut-2-enoate

  • Catalogue No.:PA 20 0251002

  • CAS :

    29214-62-8

  • Molecular Formula : C8H12O4

  • Molecular Weight : 172.18

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0251004

1,3-Dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purine-8-sulfonic Acid

1,3-Dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purine-8-sulfonic Acid

  • Catalogue No.:PA 20 0251004

  • CAS :

    5270-31-5

  • Molecular Formula : C7H8N4O5S

  • Molecular Weight : 260.22

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0251005

1,3-Dimethyl-9-nitroso-3,9-dihydro-1H-purine-2,6-dione

1,3-Dimethyl-9-nitroso-3,9-dihydro-1H-purine-2,6-dione

  • Catalogue No.:PA 20 0251005

  • CAS :

    NA

  • Molecular Formula : C7H7N5O3

  • Molecular Weight : 209.17

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0251006

N-(6-Amino-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)-N-nitrosoformamide

N-(6-Amino-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)-N-nitrosoformamide

  • Catalogue No.:PA 20 0251006

  • CAS :

    NA

  • Molecular Formula : C7H9N5O4

  • Molecular Weight : 227.18

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0251007

1,3-Dimethyl-7-nitroso-3,7-dihydro-1H-purine-2,6-dione

1,3-Dimethyl-7-nitroso-3,7-dihydro-1H-purine-2,6-dione

  • Catalogue No.:PA 20 0251007

  • CAS :

    NA

  • Molecular Formula : C7H7N5O3

  • Molecular Weight : 209.17

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0251008

8-Methylxanthine

8-Methylxanthine

  • Catalogue No.:PA 20 0251008

  • CAS :

    17338-96-4

  • Molecular Formula : C6H6N4O2

  • Molecular Weight : 166.14

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Drug Reference Standards & Impurity Synthesis in India
PA IPRST044

Theophylline (IPRST044)

Theophylline (IPRST044)

  • Catalogue No.:PA IPRST044

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0251009

N-Methyl-5-(methyl(nitroso)amino)-1H-imidazole-4-carboxamide

N-Methyl-5-(methyl(nitroso)amino)-1H-imidazole-4-carboxamide

  • Catalogue No.:PA 20 0251009

  • CAS :

    NA

  • Molecular Formula : C6H9N5O2

  • Molecular Weight : 183.17

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0250040

Theophylline - Impurity D (Freebase)

Theophyllidine

  • Catalogue No.:PA 20 0250040

  • CAS :

    6736-40-9

  • Molecular Formula : C6H10N4O

  • Molecular Weight : 154.17

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0251010

1,7-Dimethyluric Acid

1,7-Dimethyluric Acid

  • Catalogue No.:PA 20 0251010

  • CAS :

    33868-03-0

  • Molecular Formula : C7H8N4O3

  • Molecular Weight : 196.17

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0250041

Theophylline - Impurity D (Hydrochloride Monohydrate Salt)

Theophyllidine Hydrochloride Monohydrate Salt

  • Catalogue No.:PA 20 0250041

  • CAS :

    NA

  • Molecular Formula : C6H13ClN4O2

  • Molecular Weight : 208.65

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0251011

7-(2-Aminoethyl)theophylline

7-(2-Aminoethyl)theophylline

  • Catalogue No.:PA 20 0251011

  • CAS :

    35206-02-1

  • Molecular Formula : C9H13N5O2

  • Molecular Weight : 223.24

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0251012

7-(2-((3,4-Dihydroxyphenethyl)amino)ethyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione Hydrochloride

7-(2-((3,4-Dihydroxyphenethyl)amino)ethyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione Hydrochloride

  • Catalogue No.:PA 20 0251012

  • CAS :

    62932-01-8

  • Molecular Formula : C17H22ClN5O4

  • Molecular Weight : 395.84

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0251013

N-(5-Amino-1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)-N-nitrosoformamide

N-(5-Amino-1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)-N-nitrosoformamide

  • Catalogue No.:PA 20 0251013

  • CAS :

    NA

  • Molecular Formula : C7H9N5O4

  • Molecular Weight : 227.18

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0251014

1-(3,5-Dibromo-2-chlorophenyl)ethan-1-one

1-(3,5-Dibromo-2-chlorophenyl)ethan-1-one

  • Catalogue No.:PA 20 0251014

  • CAS :

    113523-00-5

  • Molecular Formula : C8H5Br2ClO

  • Molecular Weight : 312.39

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0251015

7-(Hydroxymethyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione

7-(Hydroxymethyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione

  • Catalogue No.:PA 20 0251015

  • CAS :

    31542-43-5

  • Molecular Formula : C8H10N4O3

  • Molecular Weight : 210.19

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Drug Reference Standards & Impurity Synthesis in India
PA 20 0251016

9-(2,3-Dihydroxypropyl)-1,3-dimethyl-3,9-dihydro-1H-purine-2,6-dione

9-(2,3-Dihydroxypropyl)-1,3-dimethyl-3,9-dihydro-1H-purine-2,6-dione

  • Catalogue No.:PA 20 0251016

  • CAS :

    180262-60-6

  • Molecular Formula : C10H14N4O4

  • Molecular Weight : 254.25

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