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 45 results for theophylline Impurities
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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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PA EPT0800000

Theophylline (T0800000)

Theophylline (T0800000)

  • Catalogue No.:PA EPT0800000

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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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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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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PA USP1653004

Theophylline (1653004)

Theophylline (1653004)

  • Catalogue No.:PA USP1653004

  • CAS :

    58-55-9

  • Molecular Formula : NA

  • Molecular Weight : NA

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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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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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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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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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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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PA BP327RB

theophylline (327RB)

theophylline (327RB)

  • Catalogue No.:PA BP327RB

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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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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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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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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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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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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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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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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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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PA IPRST044

Theophylline (IPRST044)

Theophylline (IPRST044)

  • Catalogue No.:PA IPRST044

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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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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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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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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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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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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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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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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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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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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