Product Name

  • Name

    Loxoprofen sodium

  • EINECS 1806241-263-5
  • CAS No. 80382-23-6
  • Article Data10
  • CAS DataBase
  • Density
  • Solubility
  • Melting Point
  • Formula C15H17NaO3
  • Boiling Point 417.9 °C at 760 mmHg
  • Molecular Weight 268.288
  • Flash Point 220.7 °C
  • Transport Information
  • Appearance
  • Safety
  • Risk Codes
  • Molecular Structure Molecular Structure of 80382-23-6 (Loxoprofen sodium)
  • Hazard Symbols
  • Synonyms Benzeneaceticacid, a-methyl-4-[(2-oxocyclopentyl)methyl]-,sodium salt (9CI);CS 600;CS 600 (antiinflammatory);Loxonin;Loxoprofensodium;Sodium 2-[4-[(2-Oxocyclopentyl)methyl]phenyl]propionate;Sodiumloxoprofen;
  • PSA 57.20000
  • LogP 1.45170

Synthetic route

Conditions
ConditionsYield
With sodium hydroxide In ethanol; water for 2h; Reflux;96.6%
With methanol; sodium hydroxide for 1h;95%
With sodium hydroxide In ethanol at 50℃; for 2h;90.3%
2-(4-(bromomethyl)phenyl)propanoic acid
111128-12-2

2-(4-(bromomethyl)phenyl)propanoic acid

2-ethoxycarbonyl-1-cyclopentanone
611-10-9

2-ethoxycarbonyl-1-cyclopentanone

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Conditions
ConditionsYield
Stage #1: 2-[4-(bromomethyl)phenyl]propanoic acid; 2-ethoxycarbonyl-1-cyclopentanone With sodium hydroxide In N,N-dimethyl-formamide under 760.051 Torr; for 8h;
Stage #2: With hydrogenchloride In water; N,N-dimethyl-formamide pH=5 - 6; Further stages;
92%
1-(1-chloroethyl)-4-methylbenzene
2362-36-9

1-(1-chloroethyl)-4-methylbenzene

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Conditions
ConditionsYield
Multi-step reaction with 7 steps
1: magnesium / tetrahydrofuran / 1.5 h / 20 - 30 °C / Inert atmosphere
2: N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile) / dichloromethane / Reflux
3: sulfuric acid / 16 h / 0 - 5 °C
4: sodium periodate / N,N-dimethyl-formamide / 150 °C
5: hydrogenchloride / water / 4.5 h / Reflux
6: 5%-palladium/activated carbon; hydrogen / methanol / 14 h / 10 - 15 °C / 1125.11 Torr / Autoclave
7: sodium hydroxide / ethanol / 1 h / Reflux
View Scheme
(R,S)-2-(4'-methylphenyl) propionic acid
938-94-3

(R,S)-2-(4'-methylphenyl) propionic acid

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1: N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile) / dichloromethane / Reflux
2: sulfuric acid / 16 h / 0 - 5 °C
3: sodium periodate / N,N-dimethyl-formamide / 150 °C
4: hydrogenchloride / water / 4.5 h / Reflux
5: 5%-palladium/activated carbon; hydrogen / methanol / 14 h / 10 - 15 °C / 1125.11 Torr / Autoclave
6: sodium hydroxide / ethanol / 1 h / Reflux
View Scheme
2-(4-(bromomethyl)phenyl)propanoic acid
111128-12-2

2-(4-(bromomethyl)phenyl)propanoic acid

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: sulfuric acid / 16 h / 0 - 5 °C
2: sodium periodate / N,N-dimethyl-formamide / 150 °C
3: hydrogenchloride / water / 4.5 h / Reflux
4: 5%-palladium/activated carbon; hydrogen / methanol / 14 h / 10 - 15 °C / 1125.11 Torr / Autoclave
5: sodium hydroxide / ethanol / 1 h / Reflux
View Scheme
Multi-step reaction with 4 steps
1.1: sulfuric acid / toluene / 35 °C
1.2: 5 h / 281 °C
2.1: sodium methylate / toluene; dimethyl sulfoxide; methanol / 1.5 h / 2 - 5 °C
2.2: 5 - 18 °C
3.1: acetic acid; sulfuric acid / water / 2 h / 110 °C
4.1: sodium hydroxide / acetone / 30 °C / pH 7.2
View Scheme
Multi-step reaction with 4 steps
1: sulfuric acid / 6 h / 0 - 5 °C
2: potassium carbonate / toluene / 12 h / Reflux
3: hydrogen bromide; acetic acid / 8 h / Reflux
4: sodium hydroxide / ethanol; water / 3 h / 20 °C / pH 7 - 8
View Scheme
Multi-step reaction with 4 steps
1: sulfuric acid / 6 h / Cooling with ice
2: toluene / 12 h / 110 °C
3: sodium hydroxide; water / toluene / 2 h / 80 °C
4: sodium hydroxide / ethanol / 2 h / 50 °C
View Scheme
2-(4-bromomethylphenyl)propionic acid methyl ester
99807-54-2

2-(4-bromomethylphenyl)propionic acid methyl ester

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: sodium periodate / N,N-dimethyl-formamide / 150 °C
2: hydrogenchloride / water / 4.5 h / Reflux
3: 5%-palladium/activated carbon; hydrogen / methanol / 14 h / 10 - 15 °C / 1125.11 Torr / Autoclave
4: sodium hydroxide / ethanol / 1 h / Reflux
View Scheme
Multi-step reaction with 3 steps
1.1: sodium methylate / toluene; dimethyl sulfoxide; methanol / 1.5 h / 2 - 5 °C
1.2: 5 - 18 °C
2.1: acetic acid; sulfuric acid / water / 2 h / 110 °C
3.1: sodium hydroxide / acetone / 30 °C / pH 7.2
View Scheme
Multi-step reaction with 2 steps
1.1: sodium carbonate / acetone
2.1: hydrogenchloride / acetic acid / Reflux
2.2: Reflux
View Scheme
Multi-step reaction with 3 steps
1: potassium carbonate / toluene / 12 h / Reflux
2: hydrogen bromide; acetic acid / 8 h / Reflux
3: sodium hydroxide / ethanol; water / 3 h / 20 °C / pH 7 - 8
View Scheme
Multi-step reaction with 3 steps
1: toluene / 12 h / 110 °C
2: sodium hydroxide; water / toluene / 2 h / 80 °C
3: sodium hydroxide / ethanol / 2 h / 50 °C
View Scheme
2-(4-formylphenyl)propionic acid methyl ester
63476-54-0

2-(4-formylphenyl)propionic acid methyl ester

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: hydrogenchloride / water / 4.5 h / Reflux
2: 5%-palladium/activated carbon; hydrogen / methanol / 14 h / 10 - 15 °C / 1125.11 Torr / Autoclave
3: sodium hydroxide / ethanol / 1 h / Reflux
View Scheme
loxoprofen methyl ester
81762-92-7

loxoprofen methyl ester

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Conditions
ConditionsYield
With sodium hydroxide In ethanol for 1h; Reflux;35.36 g
C14H19BrO2

C14H19BrO2

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: magnesium; iodine / tetrahydrofuran / 20 - 25 °C
1.2: 0 - 20 °C
2.1: hydrogenchloride / methanol; water / 0 °C / Reflux
2.2: 0 °C / Reflux
3.1: sodium hydroxide; methanol / 1 h
View Scheme
1-bromomethyl-4-bromobenzene
589-15-1

1-bromomethyl-4-bromobenzene

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1.1: sodium methylate / methanol / Reflux
2.1: acetic acid; hydrogenchloride / water / Reflux
3.1: pyridinium p-toluenesulfonate / methanol / 45 - 50 °C
4.1: magnesium; iodine / tetrahydrofuran / 20 - 25 °C
4.2: 0 - 20 °C
5.1: hydrogenchloride / methanol; water / 0 °C / Reflux
5.2: 0 °C / Reflux
6.1: sodium hydroxide; methanol / 1 h
View Scheme
methyl 2-oxocyclopentane-1-carboxylate
10472-24-9

methyl 2-oxocyclopentane-1-carboxylate

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1.1: sodium methylate / methanol / Reflux
2.1: acetic acid; hydrogenchloride / water / Reflux
3.1: pyridinium p-toluenesulfonate / methanol / 45 - 50 °C
4.1: magnesium; iodine / tetrahydrofuran / 20 - 25 °C
4.2: 0 - 20 °C
5.1: hydrogenchloride / methanol; water / 0 °C / Reflux
5.2: 0 °C / Reflux
6.1: sodium hydroxide; methanol / 1 h
View Scheme
methyl 1-(4-bromobenzyl)-2-oxocyclopentanonecarboxylate

methyl 1-(4-bromobenzyl)-2-oxocyclopentanonecarboxylate

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1.1: acetic acid; hydrogenchloride / water / Reflux
2.1: pyridinium p-toluenesulfonate / methanol / 45 - 50 °C
3.1: magnesium; iodine / tetrahydrofuran / 20 - 25 °C
3.2: 0 - 20 °C
4.1: hydrogenchloride / methanol; water / 0 °C / Reflux
4.2: 0 °C / Reflux
5.1: sodium hydroxide; methanol / 1 h
View Scheme
2-(4-bromobenzyl)cyclopentanone
500764-03-4

2-(4-bromobenzyl)cyclopentanone

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1.1: pyridinium p-toluenesulfonate / methanol / 45 - 50 °C
2.1: magnesium; iodine / tetrahydrofuran / 20 - 25 °C
2.2: 0 - 20 °C
3.1: hydrogenchloride / methanol; water / 0 °C / Reflux
3.2: 0 °C / Reflux
4.1: sodium hydroxide; methanol / 1 h
View Scheme
methyl 2-(4-methylphenyl)propanoate
79443-97-3

methyl 2-(4-methylphenyl)propanoate

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile) / tetrachloromethane / Reflux
2.1: sodium carbonate / acetone
3.1: hydrogenchloride / acetic acid / Reflux
3.2: Reflux
View Scheme
C18H22O5

C18H22O5

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Conditions
ConditionsYield
Stage #1: C18H22O5 With hydrogenchloride In acetic acid Reflux;
Stage #2: With sodium hydroxide In ethanol Reflux;
cyclopentanone
120-92-3

cyclopentanone

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: toluene-4-sulfonic acid / toluene / 8 h / 110 °C
2: toluene / 12 h / 110 °C
3: sodium hydroxide; water / toluene / 2 h / 80 °C
4: sodium hydroxide / ethanol / 2 h / 50 °C
View Scheme
1-(N-morpholino)cyclopent-1-ene
936-52-7

1-(N-morpholino)cyclopent-1-ene

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: toluene / 12 h / 110 °C
2: sodium hydroxide; water / toluene / 2 h / 80 °C
3: sodium hydroxide / ethanol / 2 h / 50 °C
View Scheme
sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

sodium 2-[4-[(2-oxocyclopentyl)methyl]phenyl]propanoate sesquihydrate

sodium 2-[4-[(2-oxocyclopentyl)methyl]phenyl]propanoate sesquihydrate

Conditions
ConditionsYield
Stage #1: sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate With pyrographite In ethanol; water; acetone at 55 - 65℃; for 0.5h;
Stage #2: In ethanol; water; acetone at 0 - 40℃; for 4h;
90.3%
sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

Tolperisone hydrochloride

Tolperisone hydrochloride

loxoprofen tolperisone salt
1043449-71-3

loxoprofen tolperisone salt

Conditions
ConditionsYield
In isopropyl alcohol at 20℃; for 0.5h;
Conditions
ConditionsYield
With hydrogenchloride In water; toluene
sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

loxoprofen methyl ester
81762-92-7

loxoprofen methyl ester

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: hydrogenchloride / water; toluene
2: dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / 0 - 20 °C
View Scheme
sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

methyl (+/-)-2-<4-(trans-2-hydroxycyclopentylmethyl)phenyl>propionate
89631-57-2, 89675-48-9, 90319-84-9, 90319-85-0, 90319-86-1, 90319-87-2

methyl (+/-)-2-<4-(trans-2-hydroxycyclopentylmethyl)phenyl>propionate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: hydrogenchloride / water; toluene
2: dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / 0 - 20 °C
3: sodium tetrahydroborate / ethanol / 2 h / 0 °C
View Scheme
sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

C25H42O3Si

C25H42O3Si

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: hydrogenchloride / water; toluene
2: dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / 0 - 20 °C
3: sodium tetrahydroborate / ethanol / 2 h / 0 °C
4: 1H-imidazole / dichloromethane; N,N-dimethyl-formamide
View Scheme
sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

C24H40O3Si

C24H40O3Si

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: hydrogenchloride / water; toluene
2: dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / 0 - 20 °C
3: sodium tetrahydroborate / ethanol / 2 h / 0 °C
4: 1H-imidazole / dichloromethane; N,N-dimethyl-formamide
5: lithium hydroxide monohydrate / water; tetrahydrofuran; ethanol
View Scheme
sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

C32H53F2NO5Si

C32H53F2NO5Si

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1: hydrogenchloride / water; toluene
2: dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / 0 - 20 °C
3: sodium tetrahydroborate / ethanol / 2 h / 0 °C
4: 1H-imidazole / dichloromethane; N,N-dimethyl-formamide
5: lithium hydroxide monohydrate / water; tetrahydrofuran; ethanol
6: dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / dichloromethane / 0 - 20 °C
View Scheme
1-bromoethyl acetate

1-bromoethyl acetate

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

C19H24O5

C19H24O5

Conditions
ConditionsYield
With triethylamine In toluene
chloromethyl n-butyrate
33657-49-7

chloromethyl n-butyrate

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate
80382-23-6

sodium 2-<4-<(2-oxocyclopentyl)methyl>phenyl>propionate

C20H26O5

C20H26O5

Conditions
ConditionsYield
With triethylamine In toluene

Loxoprofen sodium Consensus Reports

 Loxoprofen (CAS NO.80382-23-6) Market Research Report 2009

Loxoprofen sodium Specification

The Loxoprofen sodium, with the CAS registry number 80382-23-6, is also known as Benzeneaceticacid, a-methyl-4-[(2-oxocyclopentyl)methyl]-,sodium salt (9CI). It belongs to the product categories of APIS; Aromatics; Inhibitors; Intermediates & Fine Chemicals; Pharmaceuticals. This chemical's molecular formula is C15H17NaO3 and molecular weight is 268.28. What's more, its systematic name is Sodium 2-{4-[(2-oxocyclopentyl)methyl]phenyl}propanoate.

Physical properties about Loxoprofen sodium (CAS 80382-23-6) are: (1)ACD/LogP: 1.866; (2)# of Rule of 5 Violations:  0; (3)ACD/LogD (pH 5.5): 0.73; (4)ACD/LogD (pH 7.4):  -1.07; (5)ACD/BCF (pH 5.5):  1.12; (6)ACD/BCF (pH 7.4):  1.00; (7)ACD/KOC (pH 5.5):  17.90; (8)ACD/KOC (pH 7.4):  1.00; (9)#H bond acceptors:  3; (10)#H bond donors:  1; (11)#Freely Rotating Bonds:  4; (12)Polar Surface Area:  54.37 Å2; (13)Flash Point:  220.7 °C; (14)Enthalpy of Vaporization:  70.78 kJ/mol; (15)Boiling Point:  417.9 °C at 760 mmHg; (16)Vapour Pressure:  9.92E-08 mmHg at 25°C.

Preparation of Loxoprofen sodium (CAS 80382-23-6): it can be produced by ethyl 2-oxocyclopentanecarboxylate (I) with ethyl 2-(4-chloromethylphenyl)propionate (II) by means of KOH in hot DMF. The reaction gives ethyl 2-[4-(1-ethoxycarbonyl-2-oxocyclopentan-1-ylmethyl)phenyl]propionate (III), which is then hydrolyzed and decarboxylated by treatment with 47% HBr in refluxing dioxane.

Loxoprofen sodium can be produced by ethyl 2-oxocyclopentanecarboxylate (I) and ethyl 2-(4-chloromethylphenyl)propionate.

Uses of Loxoprofen sodium (CAS 80382-23-6): it is a non-steroidal anti-inflammatory drug which is used for chronic and wet arthritis, deformability arthropathy, waist pain and periarthritis of shoulder. It's the sodium salt of Loxoprofen marketed in Brazil, Mexico and Japan by Sankyo.

You can still convert the following datas of Loxoprofen sodium (CAS 80382-23-6) into molecular structure:
(1) SMILES:[Na+].O=C2C(Cc1ccc(cc1)C(C([O-])=O)C)CCC2
(2) Std. InChI:InChI=1S/C15H18O3.Na/c1-10(15(17)18)12-7-5-11(6-8-12)9-13-3-2-4-14(13)16;/h5-8,10,13H,2-4,9H2,1H3,(H,17,18);/q;+1/p-1
(3) Std. InChIKey:WORCCYVLMMTGFR-UHFFFAOYSA-M

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