Letrozole-impurities | Pharmaffiliates

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 - API Standards 
    [catalogue_number] => PA 12 53000
    [category_ids] => ,80,81,71,78,70,82,
    [chemical_name] => 
    [weight] => 285.30
    [form] => C17H11N5
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PA 12 53000

Letrozole - API Standards


  • Catalogue No.:PA 12 53000

  • CAS :

    112809-51-5

  • Molecular Formula : C17H11N5

  • Molecular Weight : 285.30

20% OFF
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
    [cas] => 112809-52-6
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PA 12 53010

Letrozole - Impurity A


  • Catalogue No.:PA 12 53010

  • CAS :

    112809-52-6

  • Molecular Formula : C17H11N5

  • Molecular Weight : 285.30

20% OFF
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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PA 12 53020

Letrozole - Impurity B


  • Catalogue No.:PA 12 53020

  • CAS :

    113402-31-6

  • 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
    [cas] => 32446-66-5
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PA 12 53510

4,4'-Dicyanobenzophenone


  • Catalogue No.:PA 12 53510

  • CAS :

    32446-66-5

  • Molecular Formula : C15H8N2O

  • Molecular Weight : 232.24

stdClass Object
(
    [pname] => 4-((2H-1,2,3-Triazol-2-yl)methyl)benzonitrile
    [catalogue_number] => PA 12 53530
    [category_ids] => ,80,71,78,70,82,
    [chemical_name] => 
    [weight] => 184.2
    [form] => C10H8N4
    [cas] => 112809-25-3
    [pslug] => 112809-25-3-4-2h-1-2-3-triazol-2-yl-methyl-benzonitrile-pa1253530
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PA 12 53530

4-((2H-1,2,3-Triazol-2-yl)methyl)benzonitrile


  • Catalogue No.:PA 12 53530

  • CAS :

    112809-25-3

  • Molecular Formula : C10H8N4

  • Molecular Weight : 184.2

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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PA STI 056360

Letrozole-d4 (major)


  • Catalogue No.:PA STI 056360

  • CAS :

    1133712-96-5

  • 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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PA 12 53540

4-((4-Cyanophenyl)(1H-1,2,4-triazol-1-yl)methyl)benzoic Acid


  • Catalogue No.:PA 12 53540

  • CAS :

    NA

  • Molecular Formula : C17H12N4O2

  • Molecular Weight : 304.31

stdClass Object
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    [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
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PA 12 53550

4,4'-((1H-1,2,4-Triazol-1-yl)methylene)dibenzoic Acid


  • Catalogue No.:PA 12 53550

  • CAS :

    1644566-39-1

  • 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
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PA 12 53560

Letrozole N-Oxide 1


  • Catalogue No.:PA 12 53560

  • CAS :

    NA

  • 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
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PA 12 53570

Letrozole N-Oxide


  • Catalogue No.:PA 12 53570

  • CAS :

    NA

  • 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
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PA 12 0531002

Tris(4-cyanophenyl)methanol


  • Catalogue No.:PA 12 0531002

  • CAS :

    117678-98-5

  • 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,
    [chemical_name] => 
    [weight] => NA
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Letrozole (IPRS/12/18) -from IPC


  • Catalogue No.:PA IPRS 12 18

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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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PA 12 0531003

Letrozole Mono-Amide Impurity


  • Catalogue No.:PA 12 0531003

  • CAS :

    2500927-47-7

  • Molecular Formula : C17H13N5O

  • Molecular Weight : 303.33