letrozole
Letrozole is also used to help prevent the cancer from returning. Some breast cancers are made to grow faster by a natural hormone called estrogen. It is sold under the brand name Femara. Reference standards of Letrozole API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
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Letrozole - API Standards
Catalogue No.:PA 12 53000
Molecular Formula : C17H11N5
Molecular Weight : 285.30
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[catalogue_number] => PA 12 53010
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Catalogue No.:PA 12 53010
Molecular Formula : C17H11N5
Molecular Weight : 285.30
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[pname] => Letrozole - Impurity B
[catalogue_number] => PA 12 53020
[category_ids] => ,80,75,71,78,70,82,
[chemical_name] =>
[weight] => 319.36
[form] => C22H13N3
[cas] => 113402-31-6
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Catalogue No.:PA 12 53020
Molecular Formula : C22H13N3
Molecular Weight : 319.36
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[pname] => 4,4'-Dicyanobenzophenone
[catalogue_number] => PA 12 53510
[category_ids] => ,80,78,70,82,
[chemical_name] =>
[weight] => 232.24
[form] => C15H8N2O
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Catalogue No.:PA 12 53510
Molecular Formula : C15H8N2O
Molecular Weight : 232.24
stdClass Object
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[pname] => 4-((2H-1,2,3-Triazol-2-yl)methyl)benzonitrile
[catalogue_number] => PA 12 53530
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[weight] => 184.2
[form] => C10H8N4
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4-((2H-1,2,3-Triazol-2-yl)methyl)benzonitrile
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[pname] => Letrozole-d4 (major)
[catalogue_number] => PA STI 056360
[category_ids] => ,81,98,78,70,82,
[chemical_name] =>
[weight] => 289.33
[form] => C17H7D4N5
[cas] => 1133712-96-5
[pslug] => 1133712-96-5-letrozole-d4-major-pasti056360
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Catalogue No.:PA STI 056360
Molecular Formula : C17H7D4N5
Molecular Weight : 289.33
stdClass Object
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[pname] => 4-((4-Cyanophenyl)(1H-1,2,4-triazol-1-yl)methyl)benzoic Acid
[catalogue_number] => PA 12 53540
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[chemical_name] =>
[weight] => 304.31
[form] => C17H12N4O2
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4-((4-Cyanophenyl)(1H-1,2,4-triazol-1-yl)methyl)benzoic Acid
Catalogue No.:PA 12 53540
Molecular Formula : C17H12N4O2
Molecular Weight : 304.31
stdClass Object
(
[pname] => 4,4'-((1H-1,2,4-Triazol-1-yl)methylene)dibenzoic Acid
[catalogue_number] => PA 12 53550
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[chemical_name] =>
[weight] => 323.31
[form] => C17H13N3O4
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4,4'-((1H-1,2,4-Triazol-1-yl)methylene)dibenzoic Acid
Catalogue No.:PA 12 53550
Molecular Formula : C17H13N3O4
Molecular Weight : 323.31
stdClass Object
(
[pname] => Letrozole N-Oxide 1
[catalogue_number] => PA 12 53560
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[weight] => 301.31
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Catalogue No.:PA 12 53560
Molecular Formula : C17H11N5O
Molecular Weight : 301.31
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[pname] => Letrozole N-Oxide
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Catalogue No.:PA 12 53570
Molecular Formula : C17H11N5O
Molecular Weight : 301.31
stdClass Object
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[pname] => Tris(4-cyanophenyl)methanol
[catalogue_number] => PA 12 0531002
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[chemical_name] =>
[weight] => 335.37
[form] => C22H13N3O
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Tris(4-cyanophenyl)methanol
Catalogue No.:PA 12 0531002
Molecular Formula : C22H13N3O
Molecular Weight : 335.37
stdClass Object
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[pname] => Letrozole (IPRS/12/18) -from IPC
[catalogue_number] => PA IPRS 12 18
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Letrozole (IPRS/12/18) -from IPC
stdClass Object
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[pname] => Letrozole Mono-Amide Impurity
[catalogue_number] => PA 12 0531003
[category_ids] => ,75,76,78,70,82,
[chemical_name] =>
[weight] => 303.33
[form] => C17H13N5O
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Letrozole Mono-Amide Impurity
Catalogue No.:PA 12 0531003
Molecular Formula : C17H13N5O
Molecular Weight : 303.33