1-Phenylcyclopentanecarboxylic acid supplier

Name
1-Phenylcyclopentanecarboxylic acid
EINECS 201-037-7
CAS No. 77-55-4
Article Data31
CAS DataBase
Density 1.162 g/cm³
Solubility
Melting Point 157-161 °C
Formula C₁₂H₁₄O₂
Boiling Point 338.8 °C at 760 mmHg
Molecular Weight 190.242
Flash Point 157.1 °C
Transport Information
Appearance Cream to grey-brown powder
Safety 37/39-26-45-36/37/39-27
Risk Codes 36/37/38-34
Molecular Structure
Hazard Symbols Xi,C
Synonyms 1-Phenylcyclopentane-1-carboxylicacid;NSC 19462;
PSA 37.30000
LogP 2.58300

Synthetic route

: 2-allyl-2-phenylpent-4-enoic acid

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

Conditions

Conditions	Yield
Stage #1: 2-allyl-2-phenylpent-4-enoic acid With tricyclohexylphosphine[1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidine][benzylidene]ruthenium(II) dichloride In tetrahydrofuran at 40℃; for 0.5h; Inert atmosphere; Stage #2: With formic acid; sodium hydride In tetrahydrofuran at 80℃; for 24h; Inert atmosphere;	97%

: C13H14O2

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

Conditions

Conditions	Yield
With dihydrogen peroxide In water; ethyl acetate at 20℃; for 12h; Green chemistry; regioselective reaction;	92%
With dihydrogen peroxide In ethyl acetate at 20℃; regioselective reaction;	92%

: 21573-69-3
1-phenyl-1-cyclopentanecarboxaldehyde

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

Conditions

Conditions	Yield
With potassium sulfite; copper(l) chloride; potassium bromide In cyclohexane at 160℃; for 8h; Temperature;	91%
With silver(l) oxide

: 77-57-6
1-phenyl-1-cyclopentanecarbonitrile

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

Conditions

Conditions	Yield
With potassium hydroxide In ethanol for 96h; Heating;	68%
With sulfuric acid
With potassium hydroxide at 200℃;

: 908520-36-5
1-phenyl-N-(quinolin-8-yl)cyclopentanecarboxamide

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

Conditions

Conditions	Yield
Stage #1: 1-phenyl-N-(quinolin-8-yl)cyclopentanecarboxamide With ozone In dichloromethane at -78℃; Inert atmosphere; Stage #2: With lithium hydroxide monohydrate; dihydrogen peroxide In tetrahydrofuran; water at 20℃; for 48h; Inert atmosphere;	53%

: 110-52-1
1,4-dibromo-butane

: 16537-09-0
t-butyl phenylacetate

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

Conditions

Conditions	Yield
(i) aq. NaOH, Cl, DMSO, (ii) aq. H2SO4, AcOH; Multistep reaction;

: 64-18-6
formic acid

: 10487-96-4
1-phenylcyclopentanol

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

Conditions

Conditions	Yield
With sulfuric acid at 20 - 25℃; for 2h;

: 1-Methyl-1-(1-phenyl-cyclopentanecarbonyloxymethyl)-pyrrolidinium; chloride

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

Conditions

Conditions	Yield
In water at 37℃; Rate constant; pH 7.4;

: 110-52-1
1,4-dibromo-butane

: 60-29-7
diethyl ether

sodium compound of phenylacetonitrile: sodium compound of phenylacetonitrile

A: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

B amide of 1-phenyl-cyclopentane-carboxylic acid-(1): amide of 1-phenyl-cyclopentane-carboxylic acid-(1)

Conditions

Conditions	Yield
und folgender Hydrolyse des Reaktionsprodukts mit alkoh.KOH;

...Expand

: 110-52-1
1,4-dibromo-butane

sodium-compound of phenylacetonitrile: sodium-compound of phenylacetonitrile

A: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

B 1-phenyl-cyclopentane-carboxylic acid-(1)-amide: 1-phenyl-cyclopentane-carboxylic acid-(1)-amide

Conditions

Conditions	Yield
With diethyl ether Behandeln des Reaktionsprodukts mit aethanol. Kalilauge;

...Expand

: 140-29-4
phenylacetonitrile

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: NaNH2 2: methanol. KOH / 200 °C View Scheme
Multi-step reaction with 2 steps 1: NaOH 2: aqueous KOH / 130 - 140 °C View Scheme
Multi-step reaction with 2 steps 1: NaNH2 2: KOH; diethylene glycol / 190 °C View Scheme

: 140-29-4
phenylacetonitrile

n-butyl halide: n-butyl halide

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: liq. NH3, NaNH2 2: KOH / bis-(2-hydroxy-ethyl) ether View Scheme
Multi-step reaction with 2 steps 1: NaNH2 2: (acid hydrolysis) View Scheme

: 823-45-0
2-(hydroxymethylene)cyclohexanone

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: toluene / 0.17 h / 20 °C / Inert atmosphere 1.2: 12 h / Inert atmosphere 2.1: dihydrogen peroxide / ethyl acetate; water / 12 h / 20 °C / Green chemistry View Scheme

: 108-94-1
cyclohexanone

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1.1: sodium hydride / mineral oil; methanol; toluene / 12 h / 0 - 20 °C / Inert atmosphere 2.1: toluene / 0.17 h / 20 °C / Inert atmosphere 2.2: 12 h / Inert atmosphere 3.1: dihydrogen peroxide / ethyl acetate; water / 12 h / 20 °C / Green chemistry View Scheme

: 101-41-7
benzeneacetic acid methyl ester

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1.1: sodium iodide; sodium hydride / tetrahydrofuran 2.1: sodium hydroxide; water / ethanol / 90 °C 3.1: tricyclohexylphosphine[1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidine][benzylidene]ruthenium(II) dichloride / tetrahydrofuran / 0.5 h / 40 °C / Inert atmosphere 3.2: 24 h / 80 °C / Inert atmosphere View Scheme
Multi-step reaction with 2 steps 1.1: sodium hydride / tetrahydrofuran; mineral oil / 0 °C 1.2: 1,4-halobutane / 18.17 h / 0 - 50 °C 2.1: sodium hydroxide / methanol; water / 3 h / Reflux View Scheme

: 242482-24-2
methyl 2-phenyl-2-(prop-2-enyl)pent-4-enoate

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: sodium hydroxide; water / ethanol / 90 °C 2.1: tricyclohexylphosphine[1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidine][benzylidene]ruthenium(II) dichloride / tetrahydrofuran / 0.5 h / 40 °C / Inert atmosphere 2.2: 24 h / 80 °C / Inert atmosphere View Scheme

: 4535-96-0
1-phenyl-1-cyclopentanecarboxylic acid methyl ester

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

Conditions

Conditions	Yield
With sodium hydroxide In methanol; water for 3h; Reflux;

: 186581-53-3, 908094-01-9
diazomethane

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 4535-96-0
1-phenyl-1-cyclopentanecarboxylic acid methyl ester

Conditions

Conditions	Yield
In diethyl ether at 20℃; for 24h;	98%

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: potassium phenyltrifluoborate

: C18H18O2

Conditions

Conditions	Yield
With dipotassium hydrogenphosphate; oxygen; palladium diacetate; p-benzoquinone In tetr-butanol at 100℃; under 22801.5 Torr; for 48h;	98%

: 67-56-1
methanol

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 4535-96-0
1-phenyl-1-cyclopentanecarboxylic acid methyl ester

Conditions

Conditions	Yield
With thionyl chloride at 20℃; for 17h; Cooling with ice; Inert atmosphere;	97%
With hydrogenchloride for 2h; Heating;	88%
sulfuric acid Heating / reflux;

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 312727-69-8
phenyl(2,4,6-triisopropylphenyl)iodonium trifluoromethanesulfonate

: 2,4,6-triisopropylphenyl 1-phenylcyclopentane-1-carboxylate

Conditions

Conditions	Yield
With potassium tert-butylate In toluene at 0℃; for 1.25h; Reflux;	94%

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 59115-90-1
1-hydroxymethyl-1-phenylcyclopentane

Conditions

Conditions	Yield
With lithium aluminium tetrahydride In tetrahydrofuran at 0 - 20℃; for 18h; Reflux;	93%
With borane-THF In tetrahydrofuran for 2h; Ambient temperature;	75%
Multi-step reaction with 2 steps 1: 88 percent / HCl / 2 h / Heating 2: 88 percent / LiAlH4 / tetrahydrofuran / 3 h / Heating View Scheme

: N-(3-phenylpropyl)-6-amino-4a-(3-methoxyphenyl)-8a-methyloctahydroisoquinoline

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 1-phenylcyclopentanecarboxylic acid [4a-(3-methoxyphenyl)-8a-methyl-2-(3-phenylpropyl)octahydroisoquinolin-6-yl]amide

Conditions

Conditions	Yield
With (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; triethylamine In tetrahydrofuran at 20℃; for 2h;	92%

: 911422-98-5
tert-butyl (1S,4R,5R,7S)-7-amino-5-(3-isopropoxyphenyl)-4-methyl-2-azabicyclo[3.3.1]nonane-2-carboxylate

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 911423-02-4
tert-butyl (1S,4R,5R,7S)-5-(3-isopropoxyphenyl)-4-methyl-7-{[(1-phenyl-1-cyclopentyl)carbonyl]amino}-2-azabicyclo[3.3.1]nonane-2-carboxylate

Conditions

Conditions	Yield
With (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; triethylamine In tetrahydrofuran at 20℃; for 4h;	92%

: cis-N-(3-phenylpropyl)-6-amino-4a-(3-methoxyphenyl)-8a-methyloctahydroisoquinoline

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 1-phenylcyclopentanecarboxylic acid cis-[4a-(3-methoxyphenyl)-8a-methyl-2-(3-phenylpropyl)octahydroisoquinolin-6-yl]amide

Conditions

Conditions	Yield
With (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; triethylamine In tetrahydrofuran at 20℃; for 2h;	92%

: 1603-79-8
phenylglyoxylic acid ethyl ester

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: ethyl 2-hydroxy-2-phenyl-2-(1-phenylcyclopentyl)acetate

Conditions

Conditions	Yield
With (4s,6s)-2,4,5,6-tetra(9H-carbazol-9-yl)isophthalonitrile; caesium carbonate In dimethyl sulfoxide at 40℃; for 1h; Glovebox; Inert atmosphere; Irradiation;	91%

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 135569-28-7
1-(4-iodophenyl)cyclopentanecarboxylic acid

Conditions

Conditions	Yield
With sodium iodate; sulfuric acid; iodine at 20 - 70℃; for 72h;	89%

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 52648-77-8
1-(4-nitro-phenyl)-cyclopentanecarboxylic acid

Conditions

Conditions	Yield
With sulfuric acid; nitric acid at 0 - 20℃; for 3h;	87%
With sulfuric acid; nitric acid In acetic anhydride at 10℃; for 3h; Yield given;

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 64-04-0
phenethylamine

: N-phenethyl-1-phenylcyclopentane-1-carboxamide

Conditions

Conditions	Yield
With C36H24B4N2O3 In toluene at 80℃; for 14h; Molecular sieve;	86%
With oxygen; potassium carbonate; eosin y In toluene at 20℃; Irradiation; Green chemistry;	86%

: 37622-90-5
4-ethoxycarbonylpyrazole

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: ethyl 1-(1-phenylcyclopentyl)-1H-pyrazole-4-carboxylate

Conditions

Conditions	Yield
With 2,4,6-trimethyl-pyridine; tert-butylammonium hexafluorophosphate(V) In dichloromethane for 2.5h; Molecular sieve; Electrochemical reaction;	86%

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 700-88-9
cyclopentylbenzene

Conditions

Conditions	Yield
With 2,6-dimethylpyridine; 4,4'-dichlorodiphenyl disulfide; 10-methyl-9-(2,4,6-trimethylphenyl) acridinium tetrafluoroborate In 1,2-dichloro-ethane at 20℃; for 14h; Irradiation; Inert atmosphere;	82%

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 619-42-1
4-methoxycarbonylphenyl bromide

: methyl 4-((1-phenylcyclopentane-1-carbonyl)oxy)benzoate

Conditions

Conditions	Yield
With nickel(II) bromide dimethoxyethane; 4,4'-Dimethoxy-2,2'-bipyridin; tetrabutylammomium bromide; potassium carbonate In N,N-dimethyl acetamide at 20℃; for 10h; Inert atmosphere; Glovebox; Electrolysis;	82%

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 201230-82-2
carbon monoxide

: 41058-64-4
1-(2-carboxyphenyl)cyclopentanecarboxylic acid

Conditions

Conditions	Yield
With dipotassium hydrogenphosphate; sodium acetate; palladium diacetate; silver carbonate In 1,4-dioxane at 150℃; under 760.051 Torr; for 18h;	80%

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 423774-22-5
9-(3-amino-3,5-dideoxy-β-D-xylofuranosyl)-N6-cyclopentyladenine

: 9-(3,5-dideoxy-3-{[(1-phenylcyclopentyl)carbonyl]amino}-β-D-xylofuranosyl)-N6-cyclopentyladenine

Conditions

Conditions	Yield
With benzotriazol-1-ol; diisopropyl-carbodiimide In dichloromethane at 20℃; for 2h;	79%

: (+)-(1S,4R,5R,7S)-5-(3-isopropoxyphenyl)-2,4-dimethyl-2-azabicyclo[3.3.1]nonan-7-amine

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: N-[(1S,4R,5R,7S)-5-(3-isopropoxyphenyl)-2,4-dimethyl-2-azabicyclo[3.3.1]non-7-yl]-1-phenylcyclopentanecarboxamide

Conditions

Conditions	Yield
With (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; triethylamine In tetrahydrofuran at 20℃;	78%

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 623-13-2
4-methylphenyl methylsulfide

: (p-tolylthio)methyl 1-phenylcyclopentane-1-carboxylate

Conditions

Conditions	Yield
With tetrabutylammonium tetrafluoroborate In methanol; acetonitrile at 20℃; for 6h; Inert atmosphere; Electrochemical reaction;	77%

: 578-66-5
8-amino quinoline

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 908520-36-5
1-phenyl-N-(quinolin-8-yl)cyclopentanecarboxamide

Conditions

Conditions	Yield
With thionyl chloride; oxalyl dichloride In dichloromethane; N,N-dimethyl-formamide at 20℃; for 2h; Inert atmosphere; Schlenk technique;	76%

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: spiro-2-one

Conditions

Conditions	Yield
With [bis(acetoxy)iodo]benzene; potassium acetate; palladium diacetate; N-acetylglycine In tert-butyl alcohol at 100℃; for 12h; Solvent; Reagent/catalyst; Temperature; Time; Sealed tube;	69%

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride

: 6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(1-phenylcyclopentanecarbonyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile

Conditions

Conditions	Yield
Stage #1: 1-phenyl-1-cyclopentanecarboxylic acid With N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl acetamide at 20℃; for 0.416667h; Stage #2: 6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride With N-ethyl-N,N-diisopropylamine In N,N-dimethyl acetamide	68%

Yield

Stage #1: 1-phenyl-1-cyclopentanecarboxylic acid With N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl acetamide at 20℃; for 0.416667h;
Stage #2: 6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride With N-ethyl-N,N-diisopropylamine In N,N-dimethyl acetamide

68%

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 917-54-4
methyllithium

: 4046-09-7
1-(1-phenylcyclopentyl)ethan-1-one

Conditions

Conditions	Yield
In diethyl ether 1.) 0 deg C; 2.) 2 h, reflux;	67%
In diethyl ether Heating;

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 59358-70-2
1,1'-Diphenyl-1,1'-bicyclopentyl

Conditions

Conditions	Yield
With C44H32N4(2+)*2F6P(1-); sodium hydroxide In water; acetonitrile at 20℃; for 18h; Irradiation;	65%
Multi-step reaction with 2 steps 2: sodium; toluene View Scheme

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 38330-80-2
monomethyl monopotassium malonate

: 880352-58-9
3-oxo-3-(1-phenyl-cyclopentyl)-propionic acid methyl ester

Conditions

Conditions	Yield
Stage #1: 1-phenyl-1-cyclopentanecarboxylic acid With 1,1'-carbonyldiimidazole In tetrahydrofuran at 20℃; for 2h; Stage #2: monomethyl monopotassium malonate With magnesium chloride In tetrahydrofuran at 50℃;	65%

: 77-55-4
1-phenyl-1-cyclopentanecarboxylic acid

: 80735-94-0
1-Phenyl-3-buten-1-ol

: allyl 1-phenylcyclopentanecarboxylate

Conditions

Conditions	Yield
With palladium diacetate; silver carbonate In 1,2-dichloro-benzene at 100℃; for 24h; Inert atmosphere;	65%

1-Phenylcyclopentanecarboxylic acid Chemical Properties

IUPAC Name: 1-phenylcyclopentane-1-carboxylic acid
The MF of 1-Phenylcyclopentanecarboxylic acid(77-55-4): C₁₂H₁₄O₂
The MW of 1-Phenylcyclopentanecarboxylic acid(77-55-4): 190.24
EINECS: 201-037-7
mp: 159-161 °C(lit.)
Density: 1.162 g/cm³
Flash Point: 157.1 °C
Boiling Point: 338.8 °C at 760 mmHg
Index of Refraction: 1.568
Appearance: Cream to gray brown.
Solubility in water: Soluble
Categories: C11 to C12;Carbonyl Compounds;Carboxylic Acids
Synonyms: rarechem al bo 1511;phenylcyclopentanecarboxylic acid;akos bc-0226;1-Phenylcyclopentanecarboxylic acid;1-phenylcyclopentane-1-carboxylic acid;1-phenylcyclopentanecarboxylic acid;asischem d50957;1-Phenylcyclopentanecarboxylic acid 99%
the structure of 1-Phenylcyclopentanecarboxylic acid(77-55-4):

1-Phenylcyclopentanecarboxylic acid Safety Profile

Hazard Codes: Xi,C
Risk Statements: 36/37/38-34
36/37/38: Irritating to eyes, respiratory system and skin
34: Causes burns
Safety Statements: 37/39-26-45-36/37/39-27
37/39: Wear suitable gloves and eye/face protection
26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
45: In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
36/37/39: Wear suitable protective clothing, gloves and eye/face protection
27: Take off immediately all contaminated clothing
WGK Germany: 3

1-Phenylcyclopentanecarboxylic acid Specification

1. First Aid Measures
Ingestion:
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
Inhalation:
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Skin:
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Remove contaminated clothing and shoes.
Eyes:
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
2. Handling and Storage
Storage:
Store in a cool, dry place. Keep container closed when not in use.
Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Product Name

1-Phenylcyclopentanecarboxylic acid

Synthetic route

1-Phenylcyclopentanecarboxylic acid Chemical Properties

1-Phenylcyclopentanecarboxylic acid Safety Profile

1-Phenylcyclopentanecarboxylic acid Specification

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