allopurinol
Allopurinol is a purine analog and it is a structural isomer of hypoxanthine. It is an inhibitor of the enzyme xanthine oxidase. Allopurinol is used to treat excess uric acid in the blood and gout. It is sold under the brand name Zyloprim. Reference standards of Allopurinol API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
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[pname] => N-Nitroso Allopurinol
[catalogue_number] => PA 01 0391002
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[form] => C5H3N5O2
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Catalogue No.:PA 01 0391002
Molecular Formula : C5H3N5O2
Molecular Weight : 165.11
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[catalogue_number] => PA 01 0391003
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Catalogue No.:PA 01 0391003
Molecular Formula : C5H3N5O2
Molecular Weight : 165.11
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[catalogue_number] => PA 01 0391006
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[weight] => 155.12
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5-Amino-1-nitroso-1H-pyrazole-4-carboxamide
Catalogue No.:PA 01 0391006
Molecular Formula : C4H5N5O2
Molecular Weight : 155.12
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[catalogue_number] => PA 01 0391007
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[weight] => 183.13
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5-Formamido-1-nitroso-1H-pyrazole-4-carboxamide
Catalogue No.:PA 01 0391007
Molecular Formula : C5H5N5O3
Molecular Weight : 183.13
stdClass Object
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[weight] => 184.16
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Ethyl 5-amino-1-nitroso-1H-pyrazole-4-carboxylate
Catalogue No.:PA 01 0391008
Molecular Formula : C6H8N4O3
Molecular Weight : 184.16
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Ethyl 5-formamido-1-nitroso-1H-pyrazole-4-carboxylate
Catalogue No.:PA 01 0391009
Molecular Formula : C7H8N4O4
Molecular Weight : 212.17
