Levodopa-impurities | Pharmaffiliates

levodopa

Also known as L-Dopa which is an amino acid that acts as a precursor for neurotransmitters catecholamines (dopamine, norepinephrine, and epinephrine). Levodopa is used in the treatment of Parkinson's disease and dopamine-responsive dystonia. Reference standards of Levodopa API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

stdClass Object
(
    [pname] => Levodopa - API Standards 
    [catalogue_number] => PA 12 12000
    [category_ids] => 97,93,69,70,78,82
    [chemical_name] => 
    [weight] => 197.19
    [form] => C9H11NO4
    [cas] => 59-92-7
    [pslug] => 59-92-7-levodopa-api-pa1212000
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PA 12 12000

Levodopa - API Standards


  • Catalogue No.:PA 12 12000

  • CAS :

    59-92-7

  • Molecular Formula : C9H11NO4

  • Molecular Weight : 197.19

stdClass Object
(
    [pname] => Levodopa - Impurity B
    [catalogue_number] => PA 12 12020
    [category_ids] => ,97,78,70,82,
    [chemical_name] => 
    [weight] => 181.19
    [form] => C9H11NO3
    [cas] => 60-18-4
    [pslug] => 60-18-4-levodopa-impurity-b-pa1212020
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PA 12 12020

Levodopa - Impurity B


  • Catalogue No.:PA 12 12020

  • CAS :

    60-18-4

  • Molecular Formula : C9H11NO3

  • Molecular Weight : 181.19

stdClass Object
(
    [pname] => 4-Hydroxy-3-methoxymandelic Acid
    [catalogue_number] => PA 12 12510
    [category_ids] => ,80,76,75,78,70,82,
    [chemical_name] => 
    [weight] => 198.17
    [form] => C9H10O5
    [cas] => 55-10-7
    [pslug] => 55-10-7-4-hydroxy-3-methoxymandelic-acid-pa1212510
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PA 12 12510

4-Hydroxy-3-methoxymandelic Acid


  • Catalogue No.:PA 12 12510

  • CAS :

    55-10-7

  • Molecular Formula : C9H10O5

  • Molecular Weight : 198.17

stdClass Object
(
    [pname] => 3,4-Dihydroxy-DL-phenylalanine
    [catalogue_number] => PA 12 12520
    [category_ids] => ,80,79,78,70,82,
    [chemical_name] => 
    [weight] => 197.19
    [form] => C9H11NO4
    [cas] => 63-84-3
    [pslug] => 63-84-3-3-4-dihydroxy-dl-phenylalanine-pa1212520
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PA 12 12520

3,4-Dihydroxy-DL-phenylalanine


  • Catalogue No.:PA 12 12520

  • CAS :

    63-84-3

  • Molecular Formula : C9H11NO4

  • Molecular Weight : 197.19

stdClass Object
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    [pname] => 3-Acetyl-L-tyrosine Hydrochloride
    [catalogue_number] => PA 12 12530
    [category_ids] => ,97,80,75,78,70,82,
    [chemical_name] => 
    [weight] => 259.69
    [form] => C11H14ClNO4
    [cas] => 32404-28-7
    [pslug] => 32404-28-7-3-acetyl-l-tyrosine-hydrochloride-pa1212530
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PA 12 12530

3-Acetyl-L-tyrosine Hydrochloride


  • Catalogue No.:PA 12 12530

  • CAS :

    32404-28-7

  • Molecular Formula : C11H14ClNO4

  • Molecular Weight : 259.69

stdClass Object
(
    [pname] => 3-Acetyl-L-tyrosine Methyl Ester Hydrochloride
    [catalogue_number] => PA 12 12540
    [category_ids] => ,97,80,75,78,70,82,
    [chemical_name] => 
    [weight] => 273.71
    [form] =>   C12H16ClNO4
    [cas] => 57085-32-2
    [pslug] => 57085-32-2-3-acetyl-l-tyrosine-methyl-ester-hydrochloride-pa1212540
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PA 12 12540

3-Acetyl-L-tyrosine Methyl Ester Hydrochloride


  • Catalogue No.:PA 12 12540

  • CAS :

    57085-32-2

  • Molecular Formula :   C12H16ClNO4

  • Molecular Weight : 273.71

stdClass Object
(
    [pname] => 3-Acetyl-L-tyrosine
    [catalogue_number] => PA 12 12560
    [category_ids] => ,79,80,78,70,82,
    [chemical_name] => 
    [weight] => 223.23
    [form] => C11H13NO4
    [cas] => 32483-30-0
    [pslug] => 32483-30-0-3-acetyl-l-tyrosine-pa1212560
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PA 12 12560

3-Acetyl-L-tyrosine


  • Catalogue No.:PA 12 12560

  • CAS :

    32483-30-0

  • Molecular Formula : C11H13NO4

  • Molecular Weight : 223.23

stdClass Object
(
    [pname] => Levodopa - Impurity A
    [catalogue_number] => PA 12 12570
    [category_ids] => ,97,80,93,78,70,82,
    [chemical_name] => 
    [weight] => 213.19
    [form] => C9H11NO5
    [cas] => 27244-64-0
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PA 12 12570

Levodopa - Impurity A


  • Catalogue No.:PA 12 12570

  • CAS :

    27244-64-0

  • Molecular Formula : C9H11NO5

  • Molecular Weight : 213.19

stdClass Object
(
    [pname] => 3-O-Methyl-L-DOPA-d3 Monohydrate
    [catalogue_number] => PA STI 061300
    [category_ids] => ,97,98,93,78,70,82,
    [chemical_name] => 
    [weight] => 232.25
    [form] => C10H12D3NO5
    [cas] => NA
    [pslug] => 3-o-methyl-l-dopa-d3-monohydrate-pasti061300
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PA STI 061300

3-O-Methyl-L-DOPA-d3 Monohydrate


  • Catalogue No.:PA STI 061300

  • CAS :

    NA

  • Molecular Formula : C10H12D3NO5

  • Molecular Weight : 232.25

stdClass Object
(
    [pname] => 3-O-Methyl-L-DOPA-d3 Methyl Ester
    [catalogue_number] => PA STI 061310
    [category_ids] => ,97,98,93,78,70,82,
    [chemical_name] => 
    [weight] => 228.26
    [form] => C11H12D3NO4
    [cas] => 1795785-77-1
    [pslug] => 1795785-77-1-3-o-methyl-l-dopa-d3-methyl-ester-pasti061310
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PA STI 061310

3-O-Methyl-L-DOPA-d3 Methyl Ester


  • Catalogue No.:PA STI 061310

  • CAS :

    1795785-77-1

  • Molecular Formula : C11H12D3NO4

  • Molecular Weight : 228.26

stdClass Object
(
    [pname] => 3-O-Methyl-L-DOPA-d3 4-Glucuronide 
    [catalogue_number] => PA STI 061320
    [category_ids] => ,70,78,82,93,97,98,95,
    [chemical_name] => 
    [weight] => 390.36
    [form] => C16H18D3NO10
    [cas] => NA
    [pslug] => 3-o-methyl-l-dopa-d3-4-glucuronide-pasti061320
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PA STI 061320

3-O-Methyl-L-DOPA-d3 4-Glucuronide


  • Catalogue No.:PA STI 061320

  • CAS :

    NA

  • Molecular Formula : C16H18D3NO10

  • Molecular Weight : 390.36

stdClass Object
(
    [pname] => 3-O-Methyl-L-DOPA 4-Sulfate 
    [catalogue_number] => PA STI 061330
    [category_ids] => ,97,98,93,78,70,82,
    [chemical_name] => 
    [weight] => 291.28
    [form] => C10H13NO7S
    [cas] => 1391393-86-4
    [pslug] => 1391393-86-4-3-o-methyl-l-dopa-4-sulfate-pasti061330
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PA STI 061330

3-O-Methyl-L-DOPA 4-Sulfate


  • Catalogue No.:PA STI 061330

  • CAS :

    1391393-86-4

  • Molecular Formula : C10H13NO7S

  • Molecular Weight : 291.28

stdClass Object
(
    [pname] => 3-O-Methyl-L-DOPA-d3 4-Sulfate 
    [catalogue_number] => PA STI 061340
    [category_ids] => ,97,98,93,78,70,82,
    [chemical_name] => 
    [weight] => 294.30
    [form] => C10H10D3NO7S
    [cas] => NA
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PA STI 061340

3-O-Methyl-L-DOPA-d3 4-Sulfate


  • Catalogue No.:PA STI 061340

  • CAS :

    NA

  • Molecular Formula : C10H10D3NO7S

  • Molecular Weight : 294.30

stdClass Object
(
    [pname] => α,4-Dihydroxy-3-methoxy-α-methyl-benzeneethanesulfonic Acid Potassium Salt-d5
    [catalogue_number] => PA STI 032860
    [category_ids] => ,80,70,98,
    [chemical_name] => 
    [weight] => 305.4
    [form] => C10H8D5KO6S
    [cas] => 1794789-29-9
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PA STI 032860

α,4-Dihydroxy-3-methoxy-α-methyl-benzeneethanesulfonic Acid Potassium Salt-d5


  • Catalogue No.:PA STI 032860

  • CAS :

    1794789-29-9

  • Molecular Formula : C10H8D5KO6S

  • Molecular Weight : 305.4

stdClass Object
(
    [pname] => DL-DOPA-2,5,6-d6
    [catalogue_number] => PA STI 036220
    [category_ids] => ,70,78,82,93,97,98,
    [chemical_name] => 
    [weight] => 203.22
    [form] => C9H5D6NO4
    [cas] => NA
    [pslug] => dl-dopa-2-5-6-d6-pasti036220
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PA STI 036220

DL-DOPA-2,5,6-d6


  • Catalogue No.:PA STI 036220

  • CAS :

    NA

  • Molecular Formula : C9H5D6NO4

  • Molecular Weight : 203.22

stdClass Object
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    [pname] => 3-Methoxy-L-Tyrosine
    [catalogue_number] => PA 12 12580
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 211.22
    [form] => C10H13NO4
    [cas] => 300-48-1
    [pslug] => 300-48-1-3-methoxy-l-tyrosine-pa1212580
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PA 12 12580

3-Methoxy-L-Tyrosine


  • Catalogue No.:PA 12 12580

  • CAS :

    300-48-1

  • Molecular Formula : C10H13NO4

  • Molecular Weight : 211.22

stdClass Object
(
    [pname] => 3-Methoxy-L-tyrosine Monohydrate
    [catalogue_number] => PA 12 12590
    [category_ids] => ,93,78,70,82,
    [chemical_name] => 
    [weight] => 229.23
    [form] => C10H15NO5
    [cas] => 200630-46-2
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PA 12 12590

3-Methoxy-L-tyrosine Monohydrate


  • Catalogue No.:PA 12 12590

  • CAS :

    200630-46-2

  • Molecular Formula : C10H15NO5

  • Molecular Weight : 229.23

stdClass Object
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    [pname] => 5,6-Dihydroxyindole-2-carboxylic Acid
    [catalogue_number] => PA 12 12600
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 193.16
    [form] => C9H7NO4
    [cas] => 4790-08-3
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PA 12 12600

5,6-Dihydroxyindole-2-carboxylic Acid


  • Catalogue No.:PA 12 12600

  • CAS :

    4790-08-3

  • Molecular Formula : C9H7NO4

  • Molecular Weight : 193.16

stdClass Object
(
    [pname] => N-[2-[4-(Acetyloxy)-3-methoxyphenyl]-1-cyano-1-methylethyl]acetamide
    [catalogue_number] => PA 12 12610
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    [chemical_name] => 
    [weight] => 290.31
    [form] => C15H18N2O4
    [cas] => 15073-74-2
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PA 12 12610

N-[2-[4-(Acetyloxy)-3-methoxyphenyl]-1-cyano-1-methylethyl]acetamide


  • Catalogue No.:PA 12 12610

  • CAS :

    15073-74-2

  • Molecular Formula : C15H18N2O4

  • Molecular Weight : 290.31

stdClass Object
(
    [pname] => 3-Acetyl-N-benzyloxycarbonyl-L-tyrosine Methyl Ester
    [catalogue_number] => PA 12 12620
    [category_ids] => ,97,93,78,70,82,
    [chemical_name] => 
    [weight] => 371.38
    [form] => C20H21NO6
    [cas] => 110774-03-3
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PA 12 12620

3-Acetyl-N-benzyloxycarbonyl-L-tyrosine Methyl Ester


  • Catalogue No.:PA 12 12620

  • CAS :

    110774-03-3

  • Molecular Formula : C20H21NO6

  • Molecular Weight : 371.38

stdClass Object
(
    [pname] => 3-Acetyl-N-benzyloxycarbonyl-4-O-benzyl-L-tyrosine Methyl Ester
    [catalogue_number] => PA 12 12630
    [category_ids] => ,97,93,78,70,82,
    [chemical_name] => 
    [weight] => 461.51
    [form] => C27H27NO6
    [cas] => 105205-69-4
    [pslug] => 105205-69-4-3-acetyl-n-benzyloxycarbonyl-4-o-benzyl-l-tyrosine-methyl-ester-pa1212630
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PA 12 12630

3-Acetyl-N-benzyloxycarbonyl-4-O-benzyl-L-tyrosine Methyl Ester


  • Catalogue No.:PA 12 12630

  • CAS :

    105205-69-4

  • Molecular Formula : C27H27NO6

  • Molecular Weight : 461.51

stdClass Object
(
    [pname] => (Acetyl-d3)glycine-2,2-d2
    [catalogue_number] => PA STI 088610
    [category_ids] => ,97,75,76,78,70,82,
    [chemical_name] => 
    [weight] => 122.13
    [form] => C4H2D5NO3
    [cas] => 1219805-82-9
    [pslug] => 1219805-82-9-acetyl-d3-glycine-2-2-d2-pasti088610
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PA STI 088610

(Acetyl-d3)glycine-2,2-d2


  • Catalogue No.:PA STI 088610

  • CAS :

    1219805-82-9

  • Molecular Formula : C4H2D5NO3

  • Molecular Weight : 122.13

stdClass Object
(
    [pname] => 4-O-Benzyl-N-[(benzyloxy)carbonyl]-L-dOPA methyl ester
    [catalogue_number] => PA 12 0121000
    [category_ids] => ,93,75,76,78,70,82,
    [chemical_name] => 
    [weight] => 435.48
    [form] => C25H25NO6
    [cas] => 105229-41-2
    [pslug] => 105229-41-2-4-o-benzyl-n-benzyloxy-carbonyl-l-dopa-methyl-ester-pa120121000
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PA 12 0121000

4-O-Benzyl-N-[(benzyloxy)carbonyl]-L-dOPA methyl ester


  • Catalogue No.:PA 12 0121000

  • CAS :

    105229-41-2

  • Molecular Formula : C25H25NO6

  • Molecular Weight : 435.48

stdClass Object
(
    [pname] => Leucodopachrome
    [catalogue_number] => PA 12 0121001
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 195.17
    [form] => C9H9NO4
    [cas] => 18766-67-1
    [pslug] => 18766-67-1-leucodopachrome-pa120121001
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PA 12 0121001

Leucodopachrome


  • Catalogue No.:PA 12 0121001

  • CAS :

    18766-67-1

  • Molecular Formula : C9H9NO4

  • Molecular Weight : 195.17

stdClass Object
(
    [pname] => 6-Hydroxy-DL-DOPA
    [catalogue_number] => PA 12 0121002
    [category_ids] => ,97,93,69,70,78,82,
    [chemical_name] => 
    [weight] => 213.19
    [form] => C9H11NO5
    [cas] => 21373-30-8
    [pslug] => 21373-30-8-6-hydroxy-dl-dopa-pa120121002
    [latest_product] => 0
    [linkproducts] => 0
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PA 12 0121002

6-Hydroxy-DL-DOPA


  • Catalogue No.:PA 12 0121002

  • CAS :

    21373-30-8

  • Molecular Formula : C9H11NO5

  • Molecular Weight : 213.19

stdClass Object
(
    [pname] => (1S,3S)-6,7-Dihydroxy-1-methyl-1,2,3,4-tetrahydroisoquinoline-1,3-dicarboxylic Acid
    [catalogue_number] => PA 12 0121005
    [category_ids] => ,69,70,78,82,
    [chemical_name] => 
    [weight] => 267.24
    [form] => C12H13NO6
    [cas] => 2259692-12-9
    [pslug] => 2259692-12-9-1s-3s-6-7-dihydroxy-1-methyl-1-2-3-4-tetrahydroisoquinoline-1-3-dicarboxylic-acid-pa120121005
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PA 12 0121005

(1S,3S)-6,7-Dihydroxy-1-methyl-1,2,3,4-tetrahydroisoquinoline-1,3-dicarboxylic Acid


  • Catalogue No.:PA 12 0121005

  • CAS :

    2259692-12-9

  • Molecular Formula : C12H13NO6

  • Molecular Weight : 267.24

stdClass Object
(
    [pname] => (1R,3S)-6,7-Dihydroxy-1-methyl-1,2,3,4-tetrahydroisoquinoline-1,3-dicarboxylic Acid
    [catalogue_number] => PA 12 0121006
    [category_ids] => ,69,70,78,82,
    [chemical_name] => 
    [weight] => 267.24
    [form] => C12H13NO6
    [cas] => 2259692-11-8
    [pslug] => 2259692-11-8-1r-3s-6-7-dihydroxy-1-methyl-1-2-3-4-tetrahydroisoquinoline-1-3-dicarboxylic-acid-pa120121006
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PA 12 0121006

(1R,3S)-6,7-Dihydroxy-1-methyl-1,2,3,4-tetrahydroisoquinoline-1,3-dicarboxylic Acid


  • Catalogue No.:PA 12 0121006

  • CAS :

    2259692-11-8

  • Molecular Formula : C12H13NO6

  • Molecular Weight : 267.24

stdClass Object
(
    [pname] => Boc-3,4-dihydroxy-L-phenylalanine
    [catalogue_number] => PAI 12 012001
    [category_ids] => ,70,
    [chemical_name] => 
    [weight] => 297.31
    [form] => C14H19NO6
    [cas] => 30033-24-0
    [pslug] => 30033-24-0-boc-3-4-dihydroxy-l-phenylalanine-pai12012001
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PAI 12 012001

Boc-3,4-dihydroxy-L-phenylalanine


  • Catalogue No.:PAI 12 012001

  • CAS :

    30033-24-0

  • Molecular Formula : C14H19NO6

  • Molecular Weight : 297.31

stdClass Object
(
    [pname] => tert-Butyl (6,7-dihydroxy-2-oxochroman-3-yl)carbamate
    [catalogue_number] => PAI 12 012002
    [category_ids] => ,70,
    [chemical_name] => 
    [weight] => 295.29
    [form] => C14H17NO6
    [cas] => 2384684-16-4
    [pslug] => 2384684-16-4-tert-butyl-6-7-dihydroxy-2-oxochroman-3-yl-carbamate-pai12012002
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PAI 12 012002

tert-Butyl (6,7-dihydroxy-2-oxochroman-3-yl)carbamate


  • Catalogue No.:PAI 12 012002

  • CAS :

    2384684-16-4

  • Molecular Formula : C14H17NO6

  • Molecular Weight : 295.29

stdClass Object
(
    [pname] => 3-Amino-6,7-dihydroxychroman-2-one Hydrochloride
    [catalogue_number] => PAI 12 012003
    [category_ids] => ,70,
    [chemical_name] => 
    [weight] => 231.63
    [form] => C9H10ClNO4
    [cas] => 1822478-09-0
    [pslug] => 1822478-09-0-3-amino-6-7-dihydroxychroman-2-one-hydrochloride-pai12012003
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PAI 12 012003

3-Amino-6,7-dihydroxychroman-2-one Hydrochloride


  • Catalogue No.:PAI 12 012003

  • CAS :

    1822478-09-0

  • Molecular Formula : C9H10ClNO4

  • Molecular Weight : 231.63

stdClass Object
(
    [pname] => (S)-2-((tert-Butoxycarbonyl)amino)-3-(2,4,5-trihydroxyphenyl)propanoic Acid
    [catalogue_number] => PAI 12 012004
    [category_ids] => ,70,
    [chemical_name] => 
    [weight] => 313.31
    [form] => C14H19NO7
    [cas] => NA
    [pslug] => s-2-tert-butoxycarbonyl-amino-3-2-4-5-trihydroxyphenyl-propanoic-acid-pai12012004
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PAI 12 012004

(S)-2-((tert-Butoxycarbonyl)amino)-3-(2,4,5-trihydroxyphenyl)propanoic Acid


  • Catalogue No.:PAI 12 012004

  • CAS :

    NA

  • Molecular Formula : C14H19NO7

  • Molecular Weight : 313.31

stdClass Object
(
    [pname] => (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(3,4-dihydroxyphenyl)propanoic Acid
    [catalogue_number] => PAI 12 012005
    [category_ids] => ,70,
    [chemical_name] => 
    [weight] => 419.43
    [form] => C24H21NO6
    [cas] => 137018-93-0
    [pslug] => 137018-93-0-s-2-9h-fluoren-9-yl-methoxy-carbonyl-amino-3-3-4-dihydroxyphenyl-propanoic-acid-pai12012005
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PAI 12 012005

(S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(3,4-dihydroxyphenyl)propanoic Acid


  • Catalogue No.:PAI 12 012005

  • CAS :

    137018-93-0

  • Molecular Formula : C24H21NO6

  • Molecular Weight : 419.43

stdClass Object
(
    [pname] => (9H-Fluoren-9-yl)methyl (6,7-dihydroxy-2-oxochroman-3-yl)carbamate
    [catalogue_number] => PAI 12 012006
    [category_ids] => ,70,
    [chemical_name] => 
    [weight] => 417.42
    [form] => C24H19NO6
    [cas] => NA
    [pslug] => 9h-fluoren-9-yl-methyl-6-7-dihydroxy-2-oxochroman-3-yl-carbamate-pai12012006
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PAI 12 012006

(9H-Fluoren-9-yl)methyl (6,7-dihydroxy-2-oxochroman-3-yl)carbamate


  • Catalogue No.:PAI 12 012006

  • CAS :

    NA

  • Molecular Formula : C24H19NO6

  • Molecular Weight : 417.42

stdClass Object
(
    [pname] => (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(2,4,5-trihydroxyphenyl)propanoic Acid
    [catalogue_number] => PAI 12 012007
    [category_ids] => ,70,
    [chemical_name] => 
    [weight] => 435.43
    [form] => C24H21NO7
    [cas] => NA
    [pslug] => s-2-9h-fluoren-9-yl-methoxy-carbonyl-amino-3-2-4-5-trihydroxyphenyl-propanoic-acid-pai12012007
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PAI 12 012007

(S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(2,4,5-trihydroxyphenyl)propanoic Acid


  • Catalogue No.:PAI 12 012007

  • CAS :

    NA

  • Molecular Formula : C24H21NO7

  • Molecular Weight : 435.43

stdClass Object
(
    [pname] => L-Dopaquinone
    [catalogue_number] => PA 12 0121007
    [category_ids] => ,69,70,78,82,
    [chemical_name] => 
    [weight] => 195.17
    [form] => C9H9NO4
    [cas] => 25520-73-4
    [pslug] => 25520-73-4-l-dopaquinone-pa120121007
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PA 12 0121007

L-Dopaquinone


  • Catalogue No.:PA 12 0121007

  • CAS :

    25520-73-4

  • Molecular Formula : C9H9NO4

  • Molecular Weight : 195.17