pyrimethamine and its Impurities

Used for the treatment of toxoplasmosis ( a parasitic disease) and cystoisosporiasis (human intestinal parasitic disease ) in combination with leucovorin. It works by inhibiting the synthesis of RNA and DNA in many species. A dihydrofolate reductase inhibitor.Reference standards of Pyrimethamine API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

Displaying 21 results for pyrimethamine Impurities
PA 43 01000

Pyrimethamine

Pyrimethamine

  • Catalogue No.:PA 43 01000

  • CAS :

    58-14-0

  • Molecular Formula : C12H13ClN4

  • Molecular Weight : 248.71

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PA 43 01510

2-(4-Chlorophenyl)-2-(2-ethyl-1,3-dioxolan-2-yl)acetonitrile

2-(4-Chlorophenyl)-2-(2-ethyl-1,3-dioxolan-2-yl)acetonitrile

  • Catalogue No.:PA 43 01510

  • CAS :

    55474-41-4

  • Molecular Formula : C13H14ClNO2

  • Molecular Weight : 251.71

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PA 43 01520

Pyrimethamine E-isomer

Pyrimethamine E-isomer

  • Catalogue No.:PA 43 01520

  • CAS :

    118364-47-9

  • Molecular Formula : C11H10ClNO

  • Molecular Weight : 207.66

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PA 43 01530

Pyrimethamine Z-isomer

Pyrimethamine Z-isomer

  • Catalogue No.:PA 43 01530

  • CAS :

    118364-40-2

  • Molecular Formula : C11H10ClNO

  • Molecular Weight : 207.66

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PA 43 01540

Pyrimethamine E/Z-Mixture

Pyrimethamine E/Z-Mixture

  • Catalogue No.:PA 43 01540

  • CAS :

    855377-91-2

  • Molecular Formula : C11H10ClNO

  • Molecular Weight : 207.66

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PA 43 01550

α-(4-Chlorophenyl)-α-propionylacetonitrile

α-(4-Chlorophenyl)-α-propionylacetonitrile

  • Catalogue No.:PA 43 01550

  • CAS :

    55474-40-3

  • Molecular Formula : C11H10ClNO

  • Molecular Weight : 207.66

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PA 43 01560

Pyrimethamine - Impurity D

(2S)-(4-chlorophenyl)(2-ethyl-1,3-dioxolan-2-yl)acetonitrile

  • Catalogue No.:PA 43 01560

  • CAS :

    NA

  • Molecular Formula : C13H14ClNO2

  • Molecular Weight : 251.71

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PA 20 57530

Pyrimethamine - Impurity B

5-(4-Chlorophenyl)-6-methylpyrimidine-2,4-diamine

  • Catalogue No.:PA 20 57530

  • CAS :

    3275-44-3

  • Molecular Formula : C11H11ClN4

  • Molecular Weight : 234.68

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PA 43 01570

Ethyl 2-(4-chlorophenyl)-3-oxopentanoate

Ethyl 2-(4-chlorophenyl)-3-oxopentanoate

  • Catalogue No.:PA 43 01570

  • CAS :

    100713-76-6

  • Molecular Formula : C13H15ClO3

  • Molecular Weight : 254.71

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PA 43 01580

(Z)-2-(4-Chlorophenyl)-3-hydroxypent-2-enenitrile

(Z)-2-(4-Chlorophenyl)-3-hydroxypent-2-enenitrile

  • Catalogue No.:PA 43 01580

  • CAS :

    945042-30-8

  • Molecular Formula : C11H10ClNO

  • Molecular Weight : 207.66

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PA ICRS47051

Pyrimethamine (ICRS47051)

  • Catalogue No.:PA ICRS47051

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

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PA IPIPRS 53 14

Pyrimethamine (IPRS/53/14)-from IPC

  • Catalogue No.:PA IPIPRS 53 14

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

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PA EPP4200000

Pyrimethamine (P4200000)

Pyrimethamine (P4200000)

  • Catalogue No.:PA EPP4200000

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA USP1589007

Pyrimethamine (1589007)

Pyrimethamine (1589007)

  • Catalogue No.:PA USP1589007

  • CAS :

    58-14-0

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA 43 0011000

2-Amino-5-(4-chlorophenyl)-6-ethylpyrimidin-4(1H)-one

2-Amino-5-(4-chlorophenyl)-6-ethylpyrimidin-4(1H)-one

  • Catalogue No.:PA 43 0011000

  • CAS :

    91396-20-2

  • Molecular Formula : C12H12ClN3O

  • Molecular Weight : 249.7

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PA 43 0010030

Pyrimethamine - Impurity C

(4-Chlorophenyl)acetonitrile

  • Catalogue No.:PA 43 0010030

  • CAS :

    140-53-4

  • Molecular Formula : C8H6ClN

  • Molecular Weight : 151.59

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PA 43 0011001

4-Amino-5-(4-chlorophenyl)-6-ethyl-1,2-dihydropyrimidin-2-one

4-Amino-5-(4-chlorophenyl)-6-ethyl-1,2-dihydropyrimidin-2-one

  • Catalogue No.:PA 43 0011001

  • CAS :

    93456-61-2

  • Molecular Formula : C12H12ClN3O

  • Molecular Weight : 249.7

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PA 43 0011002

 2-(4-Chlorophenyl)-3-oxobutanenitrile

2-(4-Chlorophenyl)-3-oxobutanenitrile

  • Catalogue No.:PA 43 0011002

  • CAS :

    5219-07-8

  • Molecular Formula : C10H8ClNO

  • Molecular Weight : 193.63

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PA 43 0011003

5-(4-Chlorophenyl)-6-ethylpyrimidine-2,4(1H,3H)-dione

5-(4-Chlorophenyl)-6-ethylpyrimidine-2,4(1H,3H)-dione

  • Catalogue No.:PA 43 0011003

  • CAS :

    2733998-15-5

  • Molecular Formula : C12H11ClN2O2

  • Molecular Weight : 250.68

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PA IPRS 54 20

Pyrimethamine (IPRS/54/20)

Pyrimethamine (IPRS/54/20)

  • Catalogue No.:PA IPRS 54 20

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA 43 0010010

Pyrimethamine - Impurity A

(2Ξ)-2-(4-Chlorophenyl)-3-oxopentanenitrile

  • Catalogue No.:PA 43 0010010

  • CAS :

    NA

  • Molecular Formula : C11H10ClNO

  • Molecular Weight : 207.66

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CPHI INDIA- 28, 30 November