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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[pname] => Letrozole
[catalogue_number] => PA 12 53000
[category_ids] => ,80,81,71,78,70,82,
[chemical_name] =>
[weight] => 285.30
[form] => C17H11N5
[cas] => 112809-51-5
[pslug] => 112809-51-5-letrozole-api-pa1253000
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Catalogue No.:PA 12 53000
Molecular Formula : C17H11N5
Molecular Weight : 285.30
stdClass Object
(
[pname] => Letrozole - Impurity A
[catalogue_number] => PA 12 53010
[category_ids] => ,80,75,71,78,70,82,
[chemical_name] =>
[weight] => 285.30
[form] => C17H11N5
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Catalogue No.:PA 12 53010
Molecular Formula : C17H11N5
Molecular Weight : 285.30
stdClass Object
(
[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
[pslug] => 113402-31-6-letrozole-impurity-b-pa1253020
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Catalogue No.:PA 12 53020
Molecular Formula : C22H13N3
Molecular Weight : 319.36
stdClass Object
(
[pname] => 4,4'-Dicyanobenzophenone
[catalogue_number] => PA 12 53510
[category_ids] => ,80,78,70,82,
[chemical_name] =>
[weight] => 232.24
[form] => C15H8N2O
[cas] => 32446-66-5
[pslug] => 32446-66-5-4-4-dicyanobenzophenone-pa1253510
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Catalogue No.:PA 12 53510
Molecular Formula : C15H8N2O
Molecular Weight : 232.24
stdClass Object
(
[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
(
[pname] => 4-((4-Cyanophenyl)(1H-1,2,4-triazol-1-yl)methyl)benzoic Acid
[catalogue_number] => PA 12 53540
[category_ids] => ,78,70,82,
[chemical_name] =>
[weight] => 304.31
[form] => C17H12N4O2
[cas] => NA
[pslug] => 4-4-cyanophenyl-1h-1-2-4-triazol-1-yl-methyl-benzoic-acid-pa1253540
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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
[category_ids] => ,78,70,82,
[chemical_name] =>
[weight] => 323.31
[form] => C17H13N3O4
[cas] => 1644566-39-1
[pslug] => 1644566-39-1-4-4-1h-1-2-4-triazol-1-yl-methylene-dibenzoic-acid-pa1253550
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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
[category_ids] => ,78,70,82,
[chemical_name] =>
[weight] => 301.31
[form] => C17H11N5O
[cas] => NA
[pslug] => letrozole-n-oxide-1-pa1253560
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Catalogue No.:PA 12 53560
Molecular Formula : C17H11N5O
Molecular Weight : 301.31
stdClass Object
(
[pname] => Letrozole N-Oxide
[catalogue_number] => PA 12 53570
[category_ids] => ,78,70,82,
[chemical_name] =>
[weight] => 301.31
[form] => C17H11N5O
[cas] => 2982528-88-9
[pslug] => 2982528-88-9-letrozole-n-oxide-pa1253570
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Catalogue No.:PA 12 53570
Molecular Formula : C17H11N5O
Molecular Weight : 301.31
stdClass Object
(
[pname] => Tris(4-cyanophenyl)methanol
[catalogue_number] => PA 12 0531002
[category_ids] => ,75,76,78,70,82,
[chemical_name] =>
[weight] => 335.37
[form] => C22H13N3O
[cas] => 117678-98-5
[pslug] => 117678-98-5-tris-4-cyanophenyl-methanol-pa120531002
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Tris(4-cyanophenyl)methanol
Catalogue No.:PA 12 0531002
Molecular Formula : C22H13N3O
Molecular Weight : 335.37
stdClass Object
(
[pname] => Letrozole (IPRS/12/18) -from IPC
[catalogue_number] => PA IPRS 12 18
[category_ids] => ,75,76,78,70,82,
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[weight] => NA
[form] => NA
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Letrozole (IPRS/12/18) -from IPC
stdClass Object
(
[pname] => Letrozole Mono-Amide Impurity
[catalogue_number] => PA 12 0531003
[category_ids] => ,75,76,78,70,82,
[chemical_name] =>
[weight] => 303.33
[form] => C17H13N5O
[cas] => 2500927-47-7
[pslug] => 2500927-47-7-letrozole-mono-amide-impurity-pa120531003
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Letrozole Mono-Amide Impurity
Catalogue No.:PA 12 0531003
Molecular Formula : C17H13N5O
Molecular Weight : 303.33
stdClass Object
(
[pname] => 4-(Chloromethyl)benzonitrile
[catalogue_number] => PA 12 0531004
[category_ids] => ,71,78,70,82,
[chemical_name] =>
[weight] => 151.59
[form] => C8H6ClN
[cas] => 874-86-2
[pslug] => 874-86-2-4-chloromethyl-benzonitrile-pa120531004
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4-(Chloromethyl)benzonitrile
Catalogue No.:PA 12 0531004
Molecular Formula : C8H6ClN
Molecular Weight : 151.59
stdClass Object
(
[pname] => 4,4'-Methylenedibenzonitrile
[catalogue_number] => PA 12 0531005
[category_ids] => ,71,78,70,82,
[chemical_name] =>
[weight] => 218.26
[form] => C15H10N2
[cas] => 10466-37-2
[pslug] => 10466-37-2-4-4-methylenedibenzonitrile-pa120531005
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4,4'-Methylenedibenzonitrile
Catalogue No.:PA 12 0531005
Molecular Formula : C15H10N2
Molecular Weight : 218.26
stdClass Object
(
[pname] => 4-((1H-1,2,4-Triazol-1-yl)methyl)benzonitrile Hydrochloride
[catalogue_number] => PA 12 0531006
[category_ids] => ,80,71,78,70,82,
[chemical_name] =>
[weight] => 220.66
[form] => C10H9ClN4
[cas] => 112809-26-4
[pslug] => 112809-26-4-4-1h-1-2-4-triazol-1-yl-methyl-benzonitrile-hydrochloride-pa120531006
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4-((1H-1,2,4-Triazol-1-yl)methyl)benzonitrile Hydrochloride
Catalogue No.:PA 12 0531006
Molecular Formula : C10H9ClN4
Molecular Weight : 220.66
