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Type:Impurity Reference Standard
API NAME:Naproxen
Total Products: 54
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Naproxen Sodium
CAT No: CL-NPXN-01 CAS No: 26159-34-2 Mol Wt: 252.24 Mol F: C14H13NaO3 Inv Status: In Stock
Chemical Name: Sodium (S)-2-(6-methoxynaphthalen-2-yl)propanoate
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Naproxen EP Impurity A
CAT No: CL-NPXN-02 CAS No: 52079-10-4 Mol Wt: 216.2 Mol F: C13H12O3 Inv Status: In Stock
Chemical Name: (?S)-6-Hydroxy-?-methyl-2-naphthaleneacetic Acid ; (S)-2-(6-Hydroxy-2-naphthyl)propionic Acid ; (S)-6-O-Desmethylnaproxen
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Naproxen EP Impurity B
CAT No: CL-NPXN-03 CAS No: 89617-86-7 Mol Wt: 264.7 Mol F: C14H13ClO3 Inv Status: Custom Synthesis
Chemical Name: (?S)-5-Chloro-6-methoxy-?-methyl-2-naphthaleneacetic Acid ; (S)-5-Chloro-6-methoxy-?-methyl-2-naphthaleneacetic Acid ; (S)-5-Chloro Naproxen
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Naproxen EP Impurity C
CAT No: CL-NPXN-04 CAS No: 84236-26-0 Mol Wt: 309.2 Mol F: C14H13BrO3 Inv Status: Custom Synthesis
Chemical Name: S-(+)-2-(5-Bromo-6-methoxy-2-naphthyl)propionic Acid ; (?S)-5-Bromo-6-methoxy-?-methyl-2-naphthaleneacetic Acid
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Naproxen EP Impurity D
CAT No: CL-NPXN-05 CAS No: 116883-62-6 Mol Wt: 356.2 Mol F: C14H13IO3 Inv Status: Custom Synthesis
Chemical Name: (S)-5-Iodo-6-methoxy-?-methyl-2-naphthaleneacetic Acid ; 2-?Naphthaleneacetic acid, 5-?iodo-?6-?methoxy-??-?methyl-?, (S)?- (9CI)
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Naproxen EP Impurity E
CAT No: CL-NPXN-06 CAS No: 26159-35-3 Mol Wt: 244.3 Mol F: C15H16O3 Inv Status: In Stock
Chemical Name: (S)-6-Methoxy-alpha-methyl-2-naphthaleneacetic Acid Methyl Ester
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Naproxen EP Impurity F
CAT No: CL-NPXN-07 CAS No: 31220-35-6 Mol Wt: 258.3 Mol F: C16H18O3 Inv Status: In Stock
Chemical Name: Ethyl (2S)-2-(6-methoxynaphthalen-2-yl)propanoate
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Naproxen EP Impurity H
CAT No: CL-NPXN-08 CAS No: 5111-66-0 Mol Wt: 174.2 Mol F: C11H10O2 Inv Status: Custom Synthesis
Chemical Name: 6-Methoxynaphthalen-2-ol
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Naproxen EP Impurity I
CAT No: CL-NPXN-09 CAS No: 23981-47-7 Mol Wt: 216.2 Mol F: C13H12O3 Inv Status: Custom Synthesis
Chemical Name: 6-Methoxy-2-Naphthylacetic Acid
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Naproxen EP Impurity J
CAT No: CL-NPXN-10 CAS No: 21388-17-0 Mol Wt: 186.3 Mol F: C13H14O Inv Status: Custom Synthesis
Chemical Name: 2-Ethyl-6-methoxynaphthalene ; 2-Methoxy-6-ethylnapthalene
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Naproxen EP Impurity K
CAT No: CL-NPXN-11 CAS No: 77301-42-9 Mol Wt: 202.3 Mol F: C13H14O2 Inv Status: In Stock
Chemical Name: 6-Methoxy-?-methyl-2-Naphthalenemethanol ; 1-(6
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Naproxen EP Impurity L
CAT No: CL-NPXN-12 CAS No: 3900-45-6 Mol Wt: 200.2 Mol F: C13H12O2 Inv Status: In Stock
Chemical Name: 1-(6-Methoxynaphthalen-2-yl)ethanone
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Naproxen EP Impurity M
CAT No: CL-NPXN-13 CAS No: 93-04-9 Mol Wt: 158.2 Mol F: C11H10O Inv Status: Custom Synthesis
Chemical Name: 2-Methoxynaphthalene
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Naproxen EP Impurity N
CAT No: CL-NPXN-14 CAS No: 5111-65-9 Mol Wt: 237.1 Mol F: C11H9BrO Inv Status: In Stock
Chemical Name: 6-Methoxy-2-bromonaphthalene ; 2-Bromo-6-methoxynaphthalene
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Naproxen USP RC G
CAT No: CL-NPXN-15 CAS No: 23979-41-1 Mol Wt: 230.3 Mol F: C14H14O3 Inv Status: Custom Synthesis
Chemical Name: (2R)-2-(6-Methoxynaphthalen-2-yl)propanoic Acid
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Naproxen Nitrile Impurity
CAT No: CL-NPXN-16 CAS No: 67886-70-8 Mol Wt: 183.2 Mol F: C12H9NO Inv Status: Custom Synthesis
Chemical Name: 6-Methoxy-2-naphthonitrile
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Naproxen EP Impurity O
CAT No: CL-NPXN-17 CAS No: 2471-70-7 Mol Wt: 202.2 Mol F: C12H10O3 Inv Status: In Stock
Chemical Name: 6-Methoxy-2-naphthoic acid
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Naproxen Racemate
CAT No: CL-NPXN-18 CAS No: 23981-80-8 Mol Wt: 230.3 Mol F: C14H14O3 Inv Status: Custom Synthesis
Chemical Name: (2RS)-2-(6-Methoxynaphthalen-2-yl)propanoic acid
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Naproxen Impurity 1
CAT No: CL-NPXN-19 CAS No: 10441-46-0 Mol Wt: 202.2 Mol F: C12H10O3 Inv Status: Custom Synthesis
Chemical Name: 2-(6-hydroxynaphthalen-2-yl)acetic acid
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Naproxen Sodium Impurity O
CAT No:  CL-NPXN-20 CAS No: 156967-24-7 Mol Wt: 272.3 Mol F: C17H20O3 Inv Status: In Stock
Chemical Name: ?Isopropyl (S)-2-(6-methoxynaphthalen-2-yl)propanoate
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Naproxen Aldehyde Impurity
CAT No:  CL-NPXN-21 CAS No: 27602-75-1 Mol Wt: 214.3 Mol F: C14H14O2 Inv Status: In Stock
Chemical Name: ?2-(6-Methoxynaphthalen-2-yl)propanal
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Naproxen Impurity 13
CAT No: CL-NPXN-22 CAS No: 111198-00-6 Mol Wt: 316.4 Mol F: C19H24O4 Inv Status: Custom Synthesis
Chemical Name: 3-Hydroxy-2,2-dimethylpropyl (S)-2-(6-methoxynaphthalen-2-yl)propanoate
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Naproxen Impurity 15
CAT No: CL-NPXN-23 CAS No: 60424-17-1 Mol Wt: 264.7 Mol F: C14H13ClO3 Inv Status: Custom Synthesis
Chemical Name: 2-(5-Chloro-6-methoxynaphthalen-2-yl)propanoic acid
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Naproxen Impurity 8
CAT No: CL-NPXN-24 CAS No: NA Mol Wt: 513.6 Mol F: C32H35NO5 Inv Status: Custom Synthesis
Chemical Name: 2-((S)-2-(6-methoxynaphthalen-2-yl)propanamido)butyl (2S)-2-(6-methoxynaphthalen-2-yl)propanoate
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Naproxen Glycerol Ester Impurity (Mixture of Diastereomers)
CAT No: CL-NPXN-25 CAS No: 38835-17-5 Mol Wt: 304.3 Mol F: C17H20O5 Inv Status: Custom Synthesis
Chemical Name: 2,3-Dihydroxypropyl 2-(6-methoxynaphthalen-2-yl)propanoate
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Rac-5-Bromo Naproxen
CAT No: CL-NPXN-26 CAS No: 27655-95-4 Mol Wt: 309.2 Mol F: C14H13BrO3 Inv Status: Custom Synthesis
Chemical Name: 2-(5-Bromo-6-methoxynaphthalen-2-yl)propanoic acid
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1-Acetyl-2-methoxynaphthalene
CAT No: CL-NPXN-27 CAS No: 5672-94-6 Mol Wt: 200.2 Mol F: C13H12O2 Inv Status: Custom Synthesis
Chemical Name: 1-(2-Methoxynaphthalen-1-yl)ethan-1-one
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Alpha-Hydroxy Naproxen
CAT No: CL-NPXN-28 CAS No: 32721-11-2 Mol Wt: 246.3 Mol F: C14H14O4 Inv Status: Custom Synthesis
Chemical Name: 2-hydroxy-2-(6-methoxynaphthalen-2-yl)propanoic acid
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Naproxen Amino Butyl Ester
CAT No: CL-NPXN-29 CAS No: NA Mol Wt: 301.4 Mol F: C18H23NO3 Inv Status: Custom Synthesis
Chemical Name: 2-Aminobutyl 2-(6-methoxynaphthalen-2-yl)propanoate
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Naproxen Dehydro Impurity
CAT No: CL-NPXN-30 CAS No: 27602-79-5 Mol Wt: 228.2 Mol F: C14H12O3 Inv Status: Custom Synthesis
Chemical Name: 2-(6-methoxynaphthalen-2-yl)acrylic acid
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Naproxen Dimer
CAT No: CL-NPXN-31 CAS No: NA Mol Wt: 458.5 Mol F: C28H26O6 Inv Status: Custom Synthesis
Chemical Name: 2,2'-(7,7'-dimethoxy-[1,1'-binaphthalene]-3,3'-diyl)dipropionic acid
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Naproxen Glucuronide
CAT No: CL-NPXN-32 CAS No: 41945-43-1 Mol Wt: 406.4 Mol F: C20H22O9 Inv Status: Custom Synthesis
Chemical Name: (2S,3S,4S,5R,6S)-3,4,5-Trihydroxy-6-(((S)-2-(6-methoxynaphthalen-2-yl)propanoyl)oxy)tetrahydro-2H-pyran-2-carboxylic acid
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Naproxen Impurity 10
CAT No: CL-NPXN-33 CAS No: 939-26-4 Mol Wt: 221.1 Mol F: C11H9Br Inv Status: Custom Synthesis
Chemical Name: ?2-(Bromomethyl)naphthalene
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Naproxen Impurity 11
CAT No: CL-NPXN-34 CAS No: 116883-61-5 Mol Wt: 356.2 Mol F: C14H13IO3 Inv Status: Custom Synthesis
Chemical Name: (R)-2-(5-Iodo-6-methoxynaphthalen-2-yl)propanoic acid
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Naproxen Impurity 2
CAT No: CL-NPXN-35 CAS No: NA Mol Wt: 301.4 : 23.0 Mol F: C18H21O4 : Na Inv Status: Custom Synthesis
Chemical Name: Sodium (S)-6-(2-(3-hydroxy-2,2-dimethylpropoxy)propanoyl)naphthalen-2-olate
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Naproxen Impurity 3
CAT No: CL-NPXN-36 CAS No: 3453-55-2 Mol Wt: 200.2 Mol F: C13H12O2 Inv Status: Custom Synthesis
Chemical Name: 1-(7-Methoxynaphthalen-1-yl)ethan-1-one
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Naproxen Impurity 4
CAT No: CL-NPXN-37 CAS No: 17056-94-9 Mol Wt: 200.2 Mol F: C13H12O2 Inv Status: Custom Synthesis
Chemical Name: 1-(3-Methoxynaphthalen-2-yl)ethan-1-one
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Naproxen Impurity 5
CAT No: CL-NPXN-38 CAS No: 358369-77-4 Mol Wt: 394.4 Mol F: C20H26O8 Inv Status: Custom Synthesis
Chemical Name: ?(2S)-(2S-3R-4R-5R)-2,3,4,5,6-Pentahydroxyhexyl-2-(2-methoxy naphthalene-6-yl) propanoate
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Naproxen Impurity 6
CAT No: CL-NPXN-39 CAS No: NA Mol Wt: 376.4 Mol F: C20H24O7 Inv Status: Custom Synthesis
Chemical Name: (R)-2-((2R,3R,4S)-3,4-dihydroxytetrahydrofuran-2-yl)-2-hydroxyethyl (S)-2-(6-methoxynaphthalen-2-yl)propanoate
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Naproxen Impurity 7
CAT No: CL-NPXN-40 CAS No: NA Mol Wt: 301.4 : 36.5 Mol F: C18H23NO3 : HCl Inv Status: Custom Synthesis
Chemical Name: 2-Aminobutyl (2S)-2-(6-methoxynaphthalen-2-yl)propanoate hydrochloride
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Naproxen Impurity 9
CAT No: CL-NPXN-41 CAS No: 2601735-81-1 Mol Wt: 302.4 Mol F: C18H22O4 Inv Status: Custom Synthesis
Chemical Name: 2-(6-(3-Hydroxy-2,2-dimethylpropoxy)naphthalen-2-yl)propanoic acid
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Naproxen Lactic acid Ester
CAT No: CL-NPXN-42 CAS No: 140225-89-4 Mol Wt: 302.3 Mol F: C17H18O5 Inv Status: Custom Synthesis
Chemical Name: (S)-2-(((S)-2-(6-methoxynaphthalen-2-yl)propanoyl)oxy)propanoic acid
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Naproxen? 1,2-Propylene Glycol? Esters (Mixture of Isomers)?
CAT No: CL-NPXN-44 CAS No: NA Mol Wt: 288.3 Mol F: C17H20O4 Inv Status: Custom Synthesis
Chemical Name: 1-Hydroxypropan-2-yl (2S)-2-(6-methoxynaphthalen-2-yl)propanoate compound with 2-hydroxypropyl (2S)-2-(6-methoxynaphthalen-2-yl)propanoate (1:1)
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Sec-Butyl Chloroacetate
CAT No: CL-NPXN-45 CAS No: 17696-64-9 Mol Wt: 150.6 Mol F: C6H11ClO2 Inv Status: Custom Synthesis
Chemical Name: Sec-butyl 2-chloroacetate
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Naproxen Impurity 14
CAT No: CL-NPXN-46 CAS No: 2664845-95-6 Mol Wt: 356.2 Mol F: C14H13IO3 Inv Status: Custom Synthesis
Chemical Name: ?2-(5-Iodo-6-methoxynaphthalen-2-yl)propanoic acid
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Desmethyl Naproxen
CAT No: CL-NPXN-47 CAS No: 60756-73-2 Mol Wt: 216.2 Mol F: C13H12O3 Inv Status: Custom Synthesis
Chemical Name: 2-(6-Hydroxynaphthalen-2-yl)propanoic acid
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Naproxen
CAT No: CL-NPXN-48 CAS No: 22204-53-1 Mol Wt: 230.3 Mol F: C14H14O3 Inv Status: Custom Synthesis
Chemical Name: (S)-6-Methoxy-a-methyl-2-naphthaleneacetic Acid ; d-2-(6-Methoxy-2-naphthyl)propionic Acid
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Naproxen Butanolamide
CAT No: CL-NPXN-49 CAS No: 2058179-15-8 Mol Wt: 301.4 Mol F: C18H23NO3 Inv Status: Custom Synthesis
Chemical Name: (2S)-N-(1-hydroxybutan-2-yl)-2-(6-methoxynaphthalen-2-yl)propanamide
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Naproxen 13C D3
CAT No: CL-NPXN-50 CAS No: NA Mol Wt: 234.3 Mol F: C1313CH11D3O3 Inv Status: Custom Synthesis
Chemical Name: (S)-2-(6-Methoxynaphthalen-2-yl)propanoic-3-13C-3,3,3-d3 acid
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Naproxen-d3
CAT No: CL-NPXN-51 CAS No: 1094102-82-5 Mol Wt: 233.3 Mol F: C14H11D3O3 Inv Status: Custom Synthesis
Chemical Name: (S)-2-(6-(methoxy-d3)naphthalen-2-yl)propanoic acid
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(+/-)-Naproxen D3
CAT No: CL-NPXN-52 CAS No: 958293-77-1 Mol Wt: 233.3 Mol F: C14H11D3O3 Inv Status: Custom Synthesis
Chemical Name: 2-(6-methoxynaphthalen-2-yl)propanoic-3,3,3-d3 acid
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(?)-Naproxen-d3
CAT No: CL-NPXN-53 CAS No: 958293-79-3 Mol Wt: 233.3 Mol F: C14H11D3O3 Inv Status: Custom Synthesis
Chemical Name: 2-(6-(Methoxy-d3)naphthalen-2-yl)propanoic acid
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Rac Naproxen-d3 Methyl Ester
CAT No: CL-NPXN-54 CAS No: 1189511-76-9 Mol Wt: 247.3 Mol F: C15H13D3O3 Inv Status: Custom Synthesis
Chemical Name: Methyl 2-(6-methoxynaphthalen-2-yl)propanoate-3,3,3-d3
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Rac O-Desmethyl Naproxen D3
CAT No: CL-NPXN-55 CAS No: 1122399-99-8 Mol Wt: 219.3 Mol F: C13H9D3O3 Inv Status: Custom Synthesis
Chemical Name: 2-(6-hydroxynaphthalen-2-yl)propanoic-3,3,3-d3 acid

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