天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

Chemical Reagents

Chemicals reagents are commonly referred to as reagent. It is a large class of pure chemical substances with various standard purities and can be used for education, scientific research, analysis and testing as well as the functional materials and raw materials required by some kinds of novel industrial materials. There is a large variety of chemical reagents and the number has reached hundreds of thousands in the world. There are also tens of thousands of reagents that have been used in daily life in china.
There is still no uniform international rules in the classification methods for chemicals. It is customary divided by subject and actual application. Take the representative catalog issued by the Germany E • Merck Company as example, there are twelve categories and seventy categories while in most countries, it is divided with the scope of application. We divide the reagents into four categories.

1. General reagents: generally refers to inorganic reagents and organic reagents that can meet standard purity. It is often applied to scientific research, analysis and testing, and synthetic reaction and used as new materials.

2. Analysis Reagents: regent dedicated to analysis and test and can be divided into two subcategories:
(1) Reagents for chemical analysis: testing items for the chemical reaction analysis.
      1) Baseline Reagent: pure compound directly used for the standard solution in the formulation and volumetric analysis.
      2) Indicator: it can be used to indicate the end of the titration reagent and can be classified into pH indicator, redox indicator adsorption indicator, metal indicator, a fluorescent indicator, and so on.
(2) Regents for instrument analysis: high-purity compounds dedicated to instrumental analysis.
       1) Spectroscopically pure reagents: spectroscopically pure compound, often expressed in the SP for spectral analysis reagents.
        2) Chromatography pure reagents: reagents dedicated to analysis of gas chromatography and liquid chromatography analysis.
       3) Deuterated reagents: reagent decided to the analysis of the nuclear resonance instrument.

3. Reagents of electronics industry: special chemical products dedicated to electronics industry.
1)  MOS Reagents: the particle concentration is consistent with ASTM "O" level, being microelectronics dedicated reagent.
2)  high-purity reagents: also known as ultra high purity reagents such as purity of 99.99%, called 4N, 99.999% referred to 5N. They are generally used for scientific research and physical and chemical trace analysis, fiber-optic communications, microelectronics, semiconductors, lasers and so on.
3)  In addition, there are also optically pure reagents, photoresist and other kinds of fine chemical products of special properties.

4. Biochemical reagents: they are basic chemical substances extracted from living organisms or chemically synthesized and is a large type of reagent as important reagents for biological component research and analysis and identification including clinical immunology reagents, genetic engineering reagent, cell culture reagents, hormone-type substances, reagent for poison carcinogenic research and reagent for anti-mold and insecticide research. In short, they are reagents for scientific research such as exploring the mysteries of life and disease prevention as well as testing agents, being pure compound related to medicine and pharmacology.

Click on the specific product, view the latest prices of the products, information, serving information
Structure Chemical Name CAS MF
2-Fluoro-3-methylaniline 2-Fluoro-3-methylaniline 1978-33-2 C7H8FN
(R)-1-[3,5-Bis(trifluoromethyl)phenyl]ethanol (R)-1-[3,5-Bis(trifluoromethyl)phenyl]ethanol 127852-28-2 C10H8F6O
3-FLUORO-4-(TRIFLUOROMETHYL)BENZALDEHYDE 3-FLUORO-4-(TRIFLUOROMETHYL)BENZALDEHYDE 204339-72-0 C8H4F4O
2-Amino-3,4-dimethylbenzoic acid 2-Amino-3,4-dimethylbenzoic acid 50419-58-4 C9H11NO2
2-THIENYLTRIMETHYLSILANE 2-THIENYLTRIMETHYLSILANE 18245-28-8 C7H12SSi
2-(Trimethylsilyl)thiazole 2-(Trimethylsilyl)thiazole 79265-30-8 C6H11NSSi
(R)-(+)-Glycidol (R)-(+)-Glycidol 57044-25-4 C3H6O2
2,4,6-TRI-TERT-BUTYLANILINE 2,4,6-TRI-TERT-BUTYLANILINE 961-38-6 C18H31N
Vinyltris(methylethylketoxime)silane Vinyltris(methylethylketoxime)silane 2224-33-1 C14H27N3O3Si
Di-p-toluoyl-D-tartaric acid monohydrate Di-p-toluoyl-D-tartaric acid monohydrate 71607-32-4 C20H20O9
N-Phenyl-bis(trifluoromethanesulfonimide) N-Phenyl-bis(trifluoromethanesulfonimide) 37595-74-7 C8H5F6NO4S2
3-CHLORO-4-METHYLBENZONITRILE 3-CHLORO-4-METHYLBENZONITRILE 21423-81-4 C8H6ClN
1,3-DIBROMO-5-(TRIFLUOROMETHOXY)BENZENE 1,3-DIBROMO-5-(TRIFLUOROMETHOXY)BENZENE 207226-31-1 C7H3Br2F3O
3-Amino-5-phenylpyrazole 3-Amino-5-phenylpyrazole 1572-10-7 C9H9N3
Dichloromethylphenylsilane Dichloromethylphenylsilane 149-74-6 C7H8Cl2Si
2,4,6-Trimethylaniline 2,4,6-Trimethylaniline 88-05-1 C9H13N
N-(Trimethylsilyl)imidazole N-(Trimethylsilyl)imidazole 18156-74-6 C6H12N2Si
4-BROMO-2-METHYLANISOLE 4-BROMO-2-METHYLANISOLE 14804-31-0 C8H9BrO
(1S,2S)-(-)-1,2-Diaminocyclohexane L-tartrate (1S,2S)-(-)-1,2-Diaminocyclohexane L-tartrate 67333-70-4 C10H20N2O6
TETRABUTYLAMMONIUM FLUORIDE TETRABUTYLAMMONIUM FLUORIDE 22206-57-1 C16H36FN
2'-Methylacetoacetanilide 2'-Methylacetoacetanilide 93-68-5 C11H13NO2
2,4,6-TRIISOPROPYLBENZENESULFONYL HYDRAZIDE 2,4,6-TRIISOPROPYLBENZENESULFONYL HYDRAZIDE 39085-59-1 C15H26N2O2S
Triethoxypropylsilane Triethoxypropylsilane 2550-02-9 C9H22O3Si
2-Chloro-4-bromobenzaldehyde 2-Chloro-4-bromobenzaldehyde 158435-41-7 C7H4BrClO
Decane Decane 124-18-5 C10H22
2,4-Diaminotoluene 2,4-Diaminotoluene 95-80-7 C7H10N2
(1R)-3-Chloro-1-phenyl-propan-1-ol (1R)-3-Chloro-1-phenyl-propan-1-ol 100306-33-0 C9H11ClO
Trimethoxyoctylsilane Trimethoxyoctylsilane 3069-40-7 C11H26O3Si
4-Chlorobenzenamine hydrochloride 4-Chlorobenzenamine hydrochloride 20265-96-7 C6H7Cl2N
1,3-Bis(trimethylsilyl)urea 1,3-Bis(trimethylsilyl)urea 18297-63-7 C7H20N2OSi2
2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 61676-62-8 C9H19BO3
2-Bromo-5-fluorobenzyl bromide 2-Bromo-5-fluorobenzyl bromide 112399-50-5 C7H5Br2F
Pentane Pentane 109-66-0 C5H12
(-)-Dibenzoyl-L-tartaric acid monohydrate (-)-Dibenzoyl-L-tartaric acid monohydrate 62708-56-9 C18H16O9
3,4-Difluorobenzoyl chloride 3,4-Difluorobenzoyl chloride 76903-88-3 C7H3ClF2O
(1S,2S)-(+)-1,2-Diaminocyclohexane (1S,2S)-(+)-1,2-Diaminocyclohexane 21436-03-3 C6H14N2
N-Boc-2-pyrroleboronic acid N-Boc-2-pyrroleboronic acid 135884-31-0 C9H14BNO4
4-Pyrazoleboronic acid pinacol ester 4-Pyrazoleboronic acid pinacol ester 269410-08-4 C9H15BN2O2
2-[(Diphenylmethyl)thio]acetamide 2-[(Diphenylmethyl)thio]acetamide 68524-30-1 C15H15NOS
Tetramethylbenzidine Tetramethylbenzidine 54827-17-7 C16H20N2
3-Fluoro-4-formylphenylboronic acid 3-Fluoro-4-formylphenylboronic acid 248270-25-9 C7H6BFO3
2-(3-Benzoylphenyl)propionitrile 2-(3-Benzoylphenyl)propionitrile 42872-30-0 C16H13NO
N-HEXADECANE-D34 N-HEXADECANE-D34 544-76-3 C16H34
1-(2,6-Difluorophenyl)ethan-1-one 1-(2,6-Difluorophenyl)ethan-1-one 13670-99-0 C8H6F2O
4-(Trimethylsilyl)morpholine 4-(Trimethylsilyl)morpholine 13368-42-8 C7H17NOSi
3-Methyl-benzoylhydrazide 3-Methyl-benzoylhydrazide 13050-47-0 C8H10N2O
2,2-Dimethylbutyryl chloride 2,2-Dimethylbutyryl chloride 5856-77-9 C6H11ClO
3',4'-DIFLUOROPROPIOPHENONE 3',4'-DIFLUOROPROPIOPHENONE 23384-72-7 C9H8F2O
(S)-(+)-2-Phenylpropionic acid (S)-(+)-2-Phenylpropionic acid 7782-24-3 C9H10O2
3-Hydroxy-2,4,5-trifluorobenzoic acid 3-Hydroxy-2,4,5-trifluorobenzoic acid 116751-24-7 C7H3F3O3
1,8-Dihydroxynaphthylene-3,6-disulfonic acid 1,8-Dihydroxynaphthylene-3,6-disulfonic acid 148-25-4 C10H8O8S2
2-Chloro-3-methylbenzoic acid 2-Chloro-3-methylbenzoic acid 15068-35-6 C8H7ClO2
3-AMINO-3-(4-CHLOROPHENYL)PROPIONIC ACID 3-AMINO-3-(4-CHLOROPHENYL)PROPIONIC ACID 19947-39-8 C9H10ClNO2
2,4-Dichlorobenzoyl peroxide 2,4-Dichlorobenzoyl peroxide 133-14-2 C14H6Cl4O4
PHENYLDICHLOROSILANE PHENYLDICHLOROSILANE 1631-84-1 C6H6Cl2Si
3,5-Di-tert-butyl-4-hydroxybenzaldehyde 3,5-Di-tert-butyl-4-hydroxybenzaldehyde 1620-98-0 C15H22O2
Methyl 2-bromomethylbenzoate Methyl 2-bromomethylbenzoate 2417-73-4 C9H9BrO2
2,2-Difluoro-1,3-dimethylimidazolidine 2,2-Difluoro-1,3-dimethylimidazolidine 220405-40-3 C5H10F2N2
4-AMINOMETHYLPHENYLBORONIC ACID HYDROCHLORIDE 4-AMINOMETHYLPHENYLBORONIC ACID HYDROCHLORIDE 75705-21-4 C7H11BClNO2
2-BROMO-4-TERT-BUTYLPHENOL 2-BROMO-4-TERT-BUTYLPHENOL 2198-66-5 C10H13BrO
Agmatine sulfate Agmatine sulfate 2482-00-0 C5H16N4O4S
2-Acetamido-4-methylphenol 2-Acetamido-4-methylphenol 6375-17-3 C9H11NO2
4-(Aminomethyl)benzonitrile hydrochloride 4-(Aminomethyl)benzonitrile hydrochloride 15996-76-6 C8H9ClN2
N-(tert-Butyldimethylsilyl)-N-methyl-trifluoroacetamide N-(tert-Butyldimethylsilyl)-N-methyl-trifluoroacetamide 77377-52-7 C9H18F3NOSi
O-Tolidine O-Tolidine 119-93-7 C14H16N2
1,5-Diaminopentane 1,5-Diaminopentane 462-94-2 C5H14N2
Potassium bis(trimethylsilyl)amide Potassium bis(trimethylsilyl)amide 40949-94-8 C6H18KNSi2
4-(4-Fluorobenzoyl)butyric acid 4-(4-Fluorobenzoyl)butyric acid 149437-76-3 C11H11FO3
Dicumyl peroxide Dicumyl peroxide 80-43-3 C18H22O2
2-BROMO-5-CHLOROANISOLE 2-BROMO-5-CHLOROANISOLE 174913-09-8 C7H6BrClO
3-Methacryloxypropylmethyldimethoxysilane 3-Methacryloxypropylmethyldimethoxysilane 14513-34-9 C10H20O4Si
N-[4-Cyano-3-(trifluoromethyl)phenyl]-3-[(4-fluorophenyl)thio]-2-hydroxy-2-methylpropionamide N-[4-Cyano-3-(trifluoromethyl)phenyl]-3-[(4-fluorophenyl)thio]-2-hydroxy-2-methylpropionamide 90356-78-8 C18H14F4N2O2S
3-Amino-3-(4-methylphenyl)propionic acid 3-Amino-3-(4-methylphenyl)propionic acid 68208-18-4 C10H13NO2
4-(Trifluoromethyl)-2'-biphenylcarboxylic acid 4-(Trifluoromethyl)-2'-biphenylcarboxylic acid 84392-17-6 C14H9F3O2
4-Chloro-3-methoxyaniline 4-Chloro-3-methoxyaniline 13726-14-2 C7H8ClNO
O-Benzylhydroxylamine hydrochloride O-Benzylhydroxylamine hydrochloride 2687-43-6 C7H10ClNO
Phenylhydrazine sulfate Phenylhydrazine sulfate 52033-74-6 C6H10N2O4S
5-Fluoro-2-methylbenzaldehyde 5-Fluoro-2-methylbenzaldehyde 22062-53-9 C8H7FO
2-Bromo-5-methoxybenzaldehyde 2-Bromo-5-methoxybenzaldehyde 7507-86-0 C8H7BrO2
5-Bromo-2-(trifluoromethyl)aniline 5-Bromo-2-(trifluoromethyl)aniline 703-91-3 C7H5BrF3N
4-(N,N-DIETHYLAMINOCARBONYL)PHENYLBORONIC ACID 4-(N,N-DIETHYLAMINOCARBONYL)PHENYLBORONIC ACID 389621-80-1 C11H16BNO3
4-Bromo-2-methylphenol 4-Bromo-2-methylphenol 2362-12-1 C7H7BrO
3-Hydroxy-2,4,6-tribromobenzoic acid 3-Hydroxy-2,4,6-tribromobenzoic acid 14348-40-4 C7H3Br3O3
5-Bromo-2-(trifluoromethoxy)aniline 5-Bromo-2-(trifluoromethoxy)aniline 886762-08-9 C7H5BrF3NO
(1R,2R)-(+)-1,2-Diaminocyclohexane L-tartrate (1R,2R)-(+)-1,2-Diaminocyclohexane L-tartrate 39961-95-0 C10H20N2O6
1-Fluoropyridinium triflate 1-Fluoropyridinium triflate 107263-95-6 C6H5F4NO3S
ALPHA-METHYLBENZYL ALCOHOL ALPHA-METHYLBENZYL ALCOHOL 13323-81-4 C8H10O
N,N-Diethyl-1,1,2,3,3,3-hexafluoropropylamine N,N-Diethyl-1,1,2,3,3,3-hexafluoropropylamine 309-88-6 C7H11F6N
2-(Trifluoromethoxy)benzoic acid 2-(Trifluoromethoxy)benzoic acid 1979-29-9 C8H5F3O3
2-AMINO-6-FLUOROBENZOTRIFLUORIDE 2-AMINO-6-FLUOROBENZOTRIFLUORIDE 123973-22-8 C7H5F4N
2-(Fluorosulfonyl)difluoroacetic acid 2-(Fluorosulfonyl)difluoroacetic acid 1717-59-5 C2HF3O4S
2,6-Difluorobenzoyl chloride 2,6-Difluorobenzoyl chloride 18063-02-0 C7H3ClF2O
N-[4-Cyano-3-(trifluoromethyl)phenyl]methacrylamide epoxide N-[4-Cyano-3-(trifluoromethyl)phenyl]methacrylamide epoxide 90357-51-0 C12H9F3N2O2
Trifluoromethanesulfonimide Trifluoromethanesulfonimide 82113-65-3 C2HF6NO4S2
4-CARBOXY-3-CHLOROPHENYLBORONIC ACID 4-CARBOXY-3-CHLOROPHENYLBORONIC ACID 136496-72-5 C7H6BClO4
9,9-Bis(4-aminophenyl)fluorene 9,9-Bis(4-aminophenyl)fluorene 15499-84-0 C25H20N2
trans-4-(4-Pentylcyclohexyl)benzonitrile trans-4-(4-Pentylcyclohexyl)benzonitrile 61204-01-1 C18H25N
5-Phenyltetrazole 5-Phenyltetrazole 18039-42-4 C7H6N4
Celite Celite 61790-53-2 O2Si
Methyl 2-amino-3-methylbenzoate Methyl 2-amino-3-methylbenzoate 22223-49-0 C9H11NO2
HomePage | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase
Copyright © 2016 ChemicalBook All rights reserved.