Product Name

  • Name

    9-Chloroacridine

  • EINECS 214-895-2
  • CAS No. 1207-69-8
  • Article Data62
  • CAS DataBase
  • Density 1.312 g/cm3
  • Solubility slightly soluble in water
  • Melting Point 116-120 °C(lit.)
  • Formula C13H8ClN
  • Boiling Point 379.4 °C at 760 mmHg
  • Molecular Weight 213.666
  • Flash Point 215.2 °C
  • Transport Information UN 2811
  • Appearance green to brown solid
  • Safety 26-36-37/39
  • Risk Codes 36/37/38-22
  • Molecular Structure Molecular Structure of 1207-69-8 (9-Chloroacridine)
  • Hazard Symbols IrritantXi,HarmfulXn
  • Synonyms NSC 51950;
  • PSA 12.89000
  • LogP 4.04140

Synthetic route

10H-acridin-9-one
578-95-0

10H-acridin-9-one

9-Chloroacridine
1207-69-8

9-Chloroacridine

Conditions
ConditionsYield
With thionyl chloride In N,N-dimethyl-formamide at 80℃; for 3h; Inert atmosphere;99%
With thionyl chloride; N,N-dimethyl-formamide for 0.5h; Chlorination; Heating;96%
With trichlorophosphate for 1h; Heating;91%
2-(phenylamino)benzoic acid
91-40-7

2-(phenylamino)benzoic acid

9-Chloroacridine
1207-69-8

9-Chloroacridine

Conditions
ConditionsYield
With trichlorophosphate at 100℃; for 0.025h; Microwave irradiation;98%
With trichlorophosphate at 135 - 140℃; for 2h; Inert atmosphere;96%
With sulfuric acid; trichlorophosphate for 12h; Heating;84%
aniline
62-53-3

aniline

ortho-chlorobenzoic acid
118-91-2

ortho-chlorobenzoic acid

9-Chloroacridine
1207-69-8

9-Chloroacridine

Conditions
ConditionsYield
Stage #1: aniline; ortho-chlorobenzoic acid With copper; potassium carbonate Ullmann Condensation; Reflux;
Stage #2: With trichlorophosphate Reflux;
60%
With trichlorophosphate Multistep reaction;
Multi-step reaction with 2 steps
1: copper; potassium carbonate / N,N-dimethyl-formamide / Heating
2: trichlorophosphate / 0.25 h / 140 °C / Microwave irradiation
View Scheme
acridine
260-94-6

acridine

9-Chloroacridine
1207-69-8

9-Chloroacridine

Conditions
ConditionsYield
With disulfur dichloride at 130 - 180℃;
Multi-step reaction with 2 steps
1: chromium acetic acid / bei der Oxydation
2: phosphorus oxychloride; phosphorus pentachloride / 120 - 130 °C
View Scheme
Multi-step reaction with 2 steps
1: sulfur
2: phosphorus oxychloride; phosphorus pentachloride / 120 - 130 °C
View Scheme
With hydrogenchloride In ethanol at 4℃;
acridine-9-thione
6540-78-9

acridine-9-thione

9-Chloroacridine
1207-69-8

9-Chloroacridine

Conditions
ConditionsYield
With phosphorus pentachloride; trichlorophosphate at 120 - 130℃;
Multi-step reaction with 3 steps
1: bromine; red phosphorus
2: diluted alcohol; sodium sulfide
3: phosphorus pentachloride
View Scheme
Multi-step reaction with 3 steps
1: phosphorus; bromine
2: diluted alcohol; sodium sulfide
3: phosphorus pentachloride
View Scheme
With phosphorus pentachloride; trichlorophosphate at 120 - 130℃;
acridine-9-thione
6540-78-9

acridine-9-thione

A

9-Chloroacridine
1207-69-8

9-Chloroacridine

B

9,9'-diacridinyl sulfide
85842-89-3

9,9'-diacridinyl sulfide

Conditions
ConditionsYield
With phosphorus pentachloride
acridine-9-thione
6540-78-9

acridine-9-thione

phosphorus pentachloride
10026-13-8, 874483-75-7

phosphorus pentachloride

9-Chloroacridine
1207-69-8

9-Chloroacridine

phosphorus pentachloride
10026-13-8, 874483-75-7

phosphorus pentachloride

10H-acridin-9-one
578-95-0

10H-acridin-9-one

9-Chloroacridine
1207-69-8

9-Chloroacridine

Conditions
ConditionsYield
at 120 - 130℃;
acridine
260-94-6

acridine

disulfur dichloride

disulfur dichloride

9-Chloroacridine
1207-69-8

9-Chloroacridine

Conditions
ConditionsYield
at 130 - 180℃;
N-oxy-acridone

N-oxy-acridone

9-Chloroacridine
1207-69-8

9-Chloroacridine

Conditions
ConditionsYield
nach Reduktion beim Erhitzen mit Phophorpentachlorid und wenig Phosphoroxychlorid auf 120-130grad;
acridine-9-thione
6540-78-9

acridine-9-thione

phosphorus pentachloride
10026-13-8, 874483-75-7

phosphorus pentachloride

A

9-Chloroacridine
1207-69-8

9-Chloroacridine

B

di--sulfide

di--sulfide

2-(phenylamino)benzoic acid
91-40-7

2-(phenylamino)benzoic acid

9-Chloroacridine
1207-69-8

9-Chloroacridine

2-(phenylamino)benzoic acid
91-40-7

2-(phenylamino)benzoic acid

phosphorus pentachloride
10026-13-8, 874483-75-7

phosphorus pentachloride

benzene
71-43-2

benzene

9-Chloroacridine
1207-69-8

9-Chloroacridine

Conditions
ConditionsYield
Erhitzen des vom Benzol befreiten Reaktionsgemisches auf 140grad;
9-bromoacridine
4357-57-7

9-bromoacridine

9-Chloroacridine
1207-69-8

9-Chloroacridine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: diluted alcohol; sodium sulfide
2: phosphorus pentachloride
View Scheme
ortho-chlorobenzoic acid
118-91-2

ortho-chlorobenzoic acid

9-Chloroacridine
1207-69-8

9-Chloroacridine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: potassium carbonate; copper(II) oxide / 2 h / Reflux
2: trichlorophosphate / 0.05 h / Microwave irradiation
View Scheme
Multi-step reaction with 2 steps
1: potassium carbonate; copper / N,N-dimethyl-formamide / 130 °C
2: trichlorophosphate / 3 h / 130 °C
View Scheme
Multi-step reaction with 2 steps
1: copper; potassium carbonate / 2-ethoxy-ethanol / 8 h / Reflux
2: trichlorophosphate / 6 h / Reflux
View Scheme
aniline
62-53-3

aniline

9-Chloroacridine
1207-69-8

9-Chloroacridine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: potassium carbonate; copper(II) oxide / 2 h / Reflux
2: trichlorophosphate / 0.05 h / Microwave irradiation
View Scheme
Multi-step reaction with 2 steps
1: potassium carbonate; copper / N,N-dimethyl-formamide / 130 °C
2: trichlorophosphate / 3 h / 130 °C
View Scheme
Multi-step reaction with 2 steps
1: copper; potassium carbonate / 2-ethoxy-ethanol / 8 h / Reflux
2: trichlorophosphate / 6 h / Reflux
View Scheme
2-bromobenzoic-acid
88-65-3

2-bromobenzoic-acid

9-Chloroacridine
1207-69-8

9-Chloroacridine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: copper; potassium carbonate / ethanol / 80 °C
2: sulfuric acid / 100 °C
3: trichlorophosphate / 110 °C
View Scheme
benzoic acid
65-85-0

benzoic acid

9-Chloroacridine
1207-69-8

9-Chloroacridine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: potassium iodide; copper; potassium carbonate / N,N-dimethyl-formamide / Reflux
2: trichlorophosphate / 135 °C
View Scheme
anthranilic acid
118-92-3

anthranilic acid

9-Chloroacridine
1207-69-8

9-Chloroacridine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: potassium carbonate; copper; copper(l) iodide / N,N-dimethyl-formamide / 12 h / 120 °C / Inert atmosphere
2: sulfuric acid / 2 h / 100 °C / Inert atmosphere
3: trichlorophosphate / N,N-dimethyl-formamide / 3 h / 0 - 100 °C
View Scheme
bromobenzene
108-86-1

bromobenzene

9-Chloroacridine
1207-69-8

9-Chloroacridine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: potassium carbonate; copper; copper(l) iodide / N,N-dimethyl-formamide / 12 h / 120 °C / Inert atmosphere
2: sulfuric acid / 2 h / 100 °C / Inert atmosphere
3: trichlorophosphate / N,N-dimethyl-formamide / 3 h / 0 - 100 °C
View Scheme
9-Chloroacridine
1207-69-8

9-Chloroacridine

5-(3-aminopropoxy)-N1,N3-bis(3-{[(6-{[[di(2-pyridinyl)methyl](2-pyridinylmethyl)amino]methyl}-3-pyridinyl)carbonyl]amino}propyl)isophthalamide
1141722-29-3

5-(3-aminopropoxy)-N1,N3-bis(3-{[(6-{[[di(2-pyridinyl)methyl](2-pyridinylmethyl)amino]methyl}-3-pyridinyl)carbonyl]amino}propyl)isophthalamide

C78H74N16O5*ClH
1141722-15-7

C78H74N16O5*ClH

Conditions
ConditionsYield
With phenol at 80℃; for 3h;100%
9-Chloroacridine
1207-69-8

9-Chloroacridine

potassium cyanide
151-50-8

potassium cyanide

acridine-9-carbonitrile
5326-19-2

acridine-9-carbonitrile

Conditions
ConditionsYield
With sodium 4-methylbenzenesulfinate In N,N-dimethyl-formamide at 60℃; for 1h;99.5%
9-Chloroacridine
1207-69-8

9-Chloroacridine

phenol
108-95-2

phenol

9-phenoxyacridine
2148-14-3

9-phenoxyacridine

Conditions
ConditionsYield
With sodium hydroxide for 18h; Substitution; Heating;99%
With sodium hydroxide at 100℃; for 1.5h;97.9%
With potassium carbonate In N,N-dimethyl-formamide at 100 - 110℃; for 24h;94%
9-Chloroacridine
1207-69-8

9-Chloroacridine

phenylboronic acid
98-80-6

phenylboronic acid

9-phenylacridine
602-56-2

9-phenylacridine

Conditions
ConditionsYield
With potassium phosphate In toluene at 100℃; for 24h; Catalytic behavior; Reagent/catalyst; Solvent; Time; Temperature; Suzuki-Miyaura Coupling; Schlenk technique; Inert atmosphere;99%
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In water; toluene at 40℃; for 3h;96.8%
With tetrakis(triphenylphosphine) palladium(0); potassium carbonate In 1,2-dimethoxyethane; ethanol; water at 90℃; for 24h; Inert atmosphere;87%
With palladium(II) acetate bis(diphenylphosphino)ferrocene; sodium carbonate In N,N-dimethyl-formamide at 100 - 110℃; for 16h; Phenylation;60%
With potassium phosphate; palladium diacetate; tricyclohexylphosphine In water; toluene Reflux;
9-Chloroacridine
1207-69-8

9-Chloroacridine

N-(3-aminopropyl)-6-(((di-pyridin-2-yl-methyl)pyridin-2-ylmethylamino)methyl)nicotinamide
321907-45-3

N-(3-aminopropyl)-6-(((di-pyridin-2-yl-methyl)pyridin-2-ylmethylamino)methyl)nicotinamide

N-[3-(acridin-9-ylamino)-propyl]-6-{[(di-pyridin-2-yl-methyl)-pyridin-2-ylmethyl-amino]-methyl}-nicotinamide

N-[3-(acridin-9-ylamino)-propyl]-6-{[(di-pyridin-2-yl-methyl)-pyridin-2-ylmethyl-amino]-methyl}-nicotinamide

Conditions
ConditionsYield
With phenol99%
9-Chloroacridine
1207-69-8

9-Chloroacridine

2-(3-aminopropoxy)-N1,N3-bis[3-(6-{[(dipyridin-2ylmethyl)(pyridin-2ylmethyl)amino]methyl}-nicotinamido)propyl]isophthalamide
1141722-31-7

2-(3-aminopropoxy)-N1,N3-bis[3-(6-{[(dipyridin-2ylmethyl)(pyridin-2ylmethyl)amino]methyl}-nicotinamido)propyl]isophthalamide

C78H74N16O5*ClH
1141722-16-8

C78H74N16O5*ClH

Conditions
ConditionsYield
With phenol at 80℃; for 3h;99%
9-Chloroacridine
1207-69-8

9-Chloroacridine

2-Methylphenylboronic acid
16419-60-6

2-Methylphenylboronic acid

9-(2-methylphenyl)acridine
40333-47-9

9-(2-methylphenyl)acridine

Conditions
ConditionsYield
With potassium phosphate In toluene at 100℃; for 24h; Suzuki-Miyaura Coupling; Schlenk technique; Inert atmosphere;99%
With potassium phosphate monohydrate; 9-(2-(dicyclohexylphosphino)phenyl)-9H-carbazole; palladium diacetate; phenylboronic acid In 1,4-dioxane at 110℃; for 24h; Suzuki coupling; Inert atmosphere;92%
9-Chloroacridine
1207-69-8

9-Chloroacridine

naphthalene-2-boronic acid
32316-92-0

naphthalene-2-boronic acid

9-(naphthalen-2-yl)acridine

9-(naphthalen-2-yl)acridine

Conditions
ConditionsYield
With potassium phosphate In toluene at 100℃; for 24h; Suzuki-Miyaura Coupling; Schlenk technique; Inert atmosphere;99%
With potassium phosphate; palladium diacetate; tricyclohexylphosphine In water; toluene Reflux;
9-Chloroacridine
1207-69-8

9-Chloroacridine

4-methoxyphenylboronic acid
5720-07-0

4-methoxyphenylboronic acid

9-(4-methoxyphenyl)acridine
21164-57-8

9-(4-methoxyphenyl)acridine

Conditions
ConditionsYield
With potassium phosphate In toluene at 100℃; for 24h; Suzuki-Miyaura Coupling; Schlenk technique; Inert atmosphere;99%
With potassium phosphate; palladium diacetate; tricyclohexylphosphine In water; toluene Reflux;
9-Chloroacridine
1207-69-8

9-Chloroacridine

3,5-dimethylphenyl boronic acid
172975-69-8

3,5-dimethylphenyl boronic acid

9-(3,5-dimethylphenyl)acridine
1352136-18-5

9-(3,5-dimethylphenyl)acridine

Conditions
ConditionsYield
With potassium phosphate In toluene at 100℃; for 24h; Suzuki-Miyaura Coupling; Schlenk technique; Inert atmosphere;99%
With potassium phosphate; palladium diacetate; tricyclohexylphosphine In water; toluene Reflux;
9-Chloroacridine
1207-69-8

9-Chloroacridine

m-tolylboronic acid
17933-03-8

m-tolylboronic acid

9-(m-tolyl)acridine

9-(m-tolyl)acridine

Conditions
ConditionsYield
With potassium phosphate In toluene at 100℃; for 24h; Suzuki-Miyaura Coupling; Schlenk technique; Inert atmosphere;99%
With palladium diacetate; sodium carbonate In water; toluene at 40℃; for 3h;96.9%
9-Chloroacridine
1207-69-8

9-Chloroacridine

4-methylphenylboronic acid
5720-05-8

4-methylphenylboronic acid

9-(4-methylphenyl)acridine
36388-29-1

9-(4-methylphenyl)acridine

Conditions
ConditionsYield
With potassium phosphate In toluene at 100℃; for 24h; Suzuki-Miyaura Coupling; Schlenk technique; Inert atmosphere;99%
With potassium phosphate; tris-(dibenzylideneacetone)dipalladium(0); 3-(dicyclohexylphosphino)-2-(2,6-dimethoxyphenyl)-1-methyl-1H-indole In 1,4-dioxane at 100℃; for 2h; Suzuki-Miyaura Coupling; Schlenk technique; Sealed tube; Inert atmosphere;93%
9-Chloroacridine
1207-69-8

9-Chloroacridine

4-tert-butylphenylboronic acid
123324-71-0

4-tert-butylphenylboronic acid

9-(4-(tert-butyl)phenyl)acridine

9-(4-(tert-butyl)phenyl)acridine

Conditions
ConditionsYield
With potassium phosphate In toluene at 100℃; for 24h; Suzuki-Miyaura Coupling; Schlenk technique; Inert atmosphere;99%
9-Chloroacridine
1207-69-8

9-Chloroacridine

4-fluoroboronic acid
1765-93-1

4-fluoroboronic acid

9-(4-fluorophenyl)acridine

9-(4-fluorophenyl)acridine

Conditions
ConditionsYield
With potassium phosphate In toluene at 100℃; for 24h; Suzuki-Miyaura Coupling; Schlenk technique; Inert atmosphere;99%
9-Chloroacridine
1207-69-8

9-Chloroacridine

4-trifluoromethylphenylboronic acid
128796-39-4

4-trifluoromethylphenylboronic acid

9-(4-(trifluoromethyl)phenyl)acridine

9-(4-(trifluoromethyl)phenyl)acridine

Conditions
ConditionsYield
With potassium phosphate In toluene at 100℃; for 24h; Suzuki-Miyaura Coupling; Schlenk technique; Inert atmosphere;99%
With tetrakis(triphenylphosphine) palladium(0); potassium carbonate In 1,4-dioxane; water at 165℃; for 0.25h; Inert atmosphere; Microwave irradiation;
9-Chloroacridine
1207-69-8

9-Chloroacridine

1-Naphthylboronic acid
13922-41-3

1-Naphthylboronic acid

9-(naphthalen-1-yl)acridine
474452-91-0

9-(naphthalen-1-yl)acridine

Conditions
ConditionsYield
With potassium phosphate In toluene at 100℃; for 24h; Suzuki-Miyaura Coupling; Schlenk technique; Inert atmosphere;99%
9-Chloroacridine
1207-69-8

9-Chloroacridine

cyclopropylboronic acid
411235-57-9

cyclopropylboronic acid

C16H13N

C16H13N

Conditions
ConditionsYield
With potassium phosphate In toluene at 100℃; for 24h; Suzuki-Miyaura Coupling; Schlenk technique; Inert atmosphere;99%
9-Chloroacridine
1207-69-8

9-Chloroacridine

(2-phenylethyl)boronic acid
34420-17-2

(2-phenylethyl)boronic acid

9-phenethyl-acridine
29162-11-6

9-phenethyl-acridine

Conditions
ConditionsYield
With potassium phosphate In toluene at 100℃; for 24h; Suzuki-Miyaura Coupling; Schlenk technique; Inert atmosphere;99%
9-Chloroacridine
1207-69-8

9-Chloroacridine

α-(2-chlorophenoxy)butanoylhydrazine

α-(2-chlorophenoxy)butanoylhydrazine

N-acridin-5-yl-N'-α-(2-chlorophenoxy)butanoylhydrazine

N-acridin-5-yl-N'-α-(2-chlorophenoxy)butanoylhydrazine

Conditions
ConditionsYield
In methanol for 3h; Heating;98.5%
1,4-bis(3-aminopropyl)piperazine
7209-38-3

1,4-bis(3-aminopropyl)piperazine

9-Chloroacridine
1207-69-8

9-Chloroacridine

C36H38N6*4ClH
86689-09-0

C36H38N6*4ClH

Conditions
ConditionsYield
With phenol98%
9-Chloroacridine
1207-69-8

9-Chloroacridine

4-Hydroxyacetophenone
99-93-4

4-Hydroxyacetophenone

1-[4-(acridin-9-yloxy)-phenyl]-ethanone

1-[4-(acridin-9-yloxy)-phenyl]-ethanone

Conditions
ConditionsYield
With potassium carbonate In acetone at 150℃; for 20h;98%
9-Chloroacridine
1207-69-8

9-Chloroacridine

α-(4-chlorophenoxy)butanoylhydrazine

α-(4-chlorophenoxy)butanoylhydrazine

N-acridin-5-yl-N'-α-(4-chlorophenoxy)butanoylhydrazine

N-acridin-5-yl-N'-α-(4-chlorophenoxy)butanoylhydrazine

Conditions
ConditionsYield
In methanol for 3h; Heating;97.6%
1-methyl-1H-imidazole
616-47-7

1-methyl-1H-imidazole

9-Chloroacridine
1207-69-8

9-Chloroacridine

C17H14N3(1+)*Cl(1-)
1402413-62-0

C17H14N3(1+)*Cl(1-)

Conditions
ConditionsYield
In toluene at 140℃; for 12h;97.6%
9-Chloroacridine
1207-69-8

9-Chloroacridine

3-isopropylphenylboronic acid
216019-28-2

3-isopropylphenylboronic acid

C22H19N

C22H19N

Conditions
ConditionsYield
With [1,4-bis(diphenylphosphino)butane] palladium(ll) dichloride; sodium carbonate In water; toluene at 60℃; for 5h;97.3%
9-Chloroacridine
1207-69-8

9-Chloroacridine

(3-ethynylphenyl)boronic acid

(3-ethynylphenyl)boronic acid

C21H13N

C21H13N

Conditions
ConditionsYield
With bis(triphenylphosphine)palladium(II) dichloride; sodium carbonate In water; toluene at 50℃; for 4h;97.1%

9-Chloroacridine Specification

The IUPAC name of 9-Chloroacridine is 9-chloroacridine. With the CAS registry number 1207-69-8, it is also named as Acridine, 9-chloro-. The product's categories are Pharmaceutical Material and Intermeidates; Acridines Heterocyclic Building Blocks; Acridines; Building Blocks; Halogenated Heterocycles; Heterocyclic Building Blocks. Besides, it is green to brown solid, which should be stored in closed containers in a cool, dry, well ventilated warehouse away from incompatible materials. In addition, its molecular formula is C13H8ClN and molecular weight is 213.66.

The other characteristics of this product can be summarized as: (1)EINECS: 214-895-2; (2)ACD/LogP: 4.00; (3)# of Rule of 5 Violations: 0; (4)ACD/LogD (pH 5.5): 3.94; (5)ACD/LogD (pH 7.4): 3.99; (6)ACD/BCF (pH 5.5): 562.85; (7)ACD/BCF (pH 7.4): 639; (8)ACD/KOC (pH 5.5): 3122.19; (9)ACD/KOC (pH 7.4): 3544.6; (10)#H bond acceptors: 1; (11)#H bond donors: 0; (12)#Freely Rotating Bonds: 0; (13)Index of Refraction: 1.728; (14)Molar Refractivity: 64.92 cm3; (15)Molar Volume: 162.8 cm3; (16)Surface Tension: 55.7 dyne/cm; (17)Density: 1.312 g/cm3; (18)Flash Point: 215.2 °C; (19)Melting point: 116-120 °C; (20)Enthalpy of Vaporization: 60.29 kJ/mol; (21)Boiling Point: 379.4 °C at 760 mmHg; (22)Vapour Pressure: 1.28E-05 mmHg at 25 °C.

Preparation of 9-Chloroacridine: this chemical can be prepared by 2-Anilino-benzoic acid.



This reaction needs POCl3 and conc.H2SO4 by heating for 12 hours. The yield is 84 %.

Uses of 9-Chloroacridine: this chemical is used as chromogenic reagent for detection of arylhydroxylamines, arylamines on paper and thin layer chromatograms. Similarly, it can react with 4-Methyl-aniline to get Acridin-9-yl-p-tolyl-amine.



This reaction will occur at temperature of 110-130 °C for 2 min. The yield is 70 %.

When you are using this chemical, please be cautious about it as the following: it is irritating to eyes, respiratory system and skin. It is also harmful if swallowed. In case of contact with eyes, please rinse immediately with plenty of water and seek medical advice. And you should wear suitable protective clothing, gloves and eye/face protection.

People can use the following data to convert to the molecule structure.
(1)SMILES: Clc1c3c(nc2c1cccc2)cccc3
(2)InChI: InChI=1/C13H8ClN/c14-13-9-5-1-3-7-11(9)15-12-8-4-2-6-10(12)13/h1-8H
(3)InChIKey: BPXINCHFOLVVSG-UHFFFAOYAW
(4)Std. InChI: InChI=1S/C13H8ClN/c14-13-9-5-1-3-7-11(9)15-12-8-4-2-6-10(12)13/h1-8H
(5)Std. InChIKey: BPXINCHFOLVVSG-UHFFFAOYSA-N

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