一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

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
IMIDAZOLE-2-BORONIC ACID IMIDAZOLE-2-BORONIC ACID 1219080-61-1 C3H5BN2O2
1-DECYL-3-METHYLIMIDAZOLIUM BROMIDE 1-DECYL-3-METHYLIMIDAZOLIUM BROMIDE 188589-32-4 C14H27BrN2
5-FLUORO-2-MERCAPTOBENZOIC ACID 5-FLUORO-2-MERCAPTOBENZOIC ACID 120121-07-5 C7H5FO2S
1,8-Diiodoperfluorooctane 1,8-Diiodoperfluorooctane 335-70-6 C8F16I2
2-AMINO-5,6-DICHLOROBENZOIC ACID 2-AMINO-5,6-DICHLOROBENZOIC ACID 20776-60-7 C7H5Cl2NO2
4-ISOPROPYLBENZYLAMINE 4-ISOPROPYLBENZYLAMINE 4395-73-7 C10H15N
4-(ETHYLTHIO)BENZOIC ACID 4-(ETHYLTHIO)BENZOIC ACID 13205-49-7 C9H10O2S
DIETHYLENGLYKOL-DIGLYCIDYLETHER DIETHYLENGLYKOL-DIGLYCIDYLETHER 4206-61-5 C10H18O5
2-(4-Aminopentyl(ethyl)amino)ethanol 2-(4-Aminopentyl(ethyl)amino)ethanol 69559-11-1 C9H22N2O
AMMONIUM FORMATE-D5 AMMONIUM FORMATE-D5 65387-23-7 CD2O2.D3N
DICHLOROBORANE-DIOXANE COMPLEX  3M SOLU& DICHLOROBORANE-DIOXANE COMPLEX 3M SOLU& 252265-33-1 C4H9BCl2O2
4-(METHYLTHIO)BENZYL BROMIDE  97 4-(METHYLTHIO)BENZYL BROMIDE 97 38185-19-2 C8H9BrS
Josiphos SL-J216-2 Josiphos SL-J216-2 849924-44-3 C40H38FeP2
(R)-1-{(S)-2-[BIS(4-METHOXY-3,5-DIMETHYLPHENYL)PHOSPHINO]FERROCENYL}-ETHYLBIS(2- (R)-1-{(S)-2-[BIS(4-METHOXY-3,5-DIMETHYLPHENYL)PHOSPHINO]FERROCENYL}-ETHYLBIS(2- 849924-49-8 C39H43O2P2.C5H5.Fe
TETRAPHENYLARSONIUM CHLORIDE HYDROCHLORIDE DIHYDRATE, 97 TETRAPHENYLARSONIUM CHLORIDE HYDROCHLORIDE DIHYDRATE, 97 21006-74-6 C24H25AsCl2O2
4-SULFONIC CALIX[6!ARENE HYDRATE, 95 4-SULFONIC CALIX[6!ARENE HYDRATE, 95 205652-55-7 C42H38O25S6
3,4-(METHYLENEDIOXY)PHENYL ISOCYANATE 3,4-(METHYLENEDIOXY)PHENYL ISOCYANATE 69922-28-7 C8H5NO3
(S)-1-{(S)-2-[2-(DIPHENYLPHOSPHINO)PHENYL]FERROCENYL}ETHYLDI(3,5-XYLYL)PHOSPHINE (S)-1-{(S)-2-[2-(DIPHENYLPHOSPHINO)PHENYL]FERROCENYL}ETHYLDI(3,5-XYLYL)PHOSPHINE 849925-21-9 C41H39P2.C5H5.Fe
3-[[(1,1-DiMethylethyl)diMethylsilyl]oxy]-1-propanol, 4nitrobenzenesulfonate 3-[[(1,1-DiMethylethyl)diMethylsilyl]oxy]-1-propanol, 4nitrobenzenesulfonate 220299-14-9 C15H25NO6SSi
N3-Asp(tBu)-OH (dicyclohexylammonium) salt N3-Asp(tBu)-OH (dicyclohexylammonium) salt 333366-23-7 C8H13N3O4
2-PHENYLGLUTARIC ANHYDRIDE 2-PHENYLGLUTARIC ANHYDRIDE 2959-96-8 C11H10O3
1-PHENYLBIGUANIDE HYDROCHLORIDE 1-PHENYLBIGUANIDE HYDROCHLORIDE 55-57-2 C8H12ClN5
1-(3,5-DICHLOROPHENYL)BIGUANIDE HYDROCHLORIDE 1-(3,5-DICHLOROPHENYL)BIGUANIDE HYDROCHLORIDE 175205-04-6 C8H10Cl3N5
2,4,6-TRIMETHYL-1,3-PHENYLENE DIISOCYANATE 2,4,6-TRIMETHYL-1,3-PHENYLENE DIISOCYANATE 16959-10-7 C11H10N2O2
1-(2,6-DICHLOROPHENYL)BIGUANIDE HYDROCHLORIDE 1-(2,6-DICHLOROPHENYL)BIGUANIDE HYDROCHLORIDE 42823-15-4 C8H9Cl2N5
P-(TRIMETHYLSILYL)PHENYLMETHANETHIOL P-(TRIMETHYLSILYL)PHENYLMETHANETHIOL 57337-85-6 C10H16SSi
BENZO(A)ANTHRACENE D12 BENZO(A)ANTHRACENE D12 1718-53-2 C18D12
PICOLINIC ACID N-OXIDE PICOLINIC ACID N-OXIDE 824-40-8 C6H5NO3
P-TERPHENYL-D14 P-TERPHENYL-D14 1718-51-0 C18D14
N-(4-DIMETHYLAMINO-3,5-DINITROPHENYL)MALEIMIDE N-(4-DIMETHYLAMINO-3,5-DINITROPHENYL)MALEIMIDE 3475-74-9 C12H10N4O6
(S)-(+)-CITRAMALIC ACID (S)-(+)-CITRAMALIC ACID 6236-09-5 C5H8O5
ESTRONE-2,4,16,16-D4 ESTRONE-2,4,16,16-D4 53866-34-5 C18H18D4O2
PARAFORMALDEHYDE-D2 PARAFORMALDEHYDE-D2 32008-59-6 (CD2O)n
FORMIC ACID-D2 FORMIC ACID-D2 920-42-3 CD2O2
4'-AMINO-5'-NITROBENZO-15-CROWN-5 4'-AMINO-5'-NITROBENZO-15-CROWN-5 77001-50-4 C14H20N2O7
MESO-2,3-BUTANEDIOL MESO-2,3-BUTANEDIOL 5341-95-7 C4H10O2
3-(DICHLOROMETHYL)BENZOYL CHLORIDE 3-(DICHLOROMETHYL)BENZOYL CHLORIDE 36747-51-0 C8H5Cl3O
ALPHA-FLUOROCINNAMIC ACID ALPHA-FLUOROCINNAMIC ACID 350-90-3 C9H7FO2
3-PENTEN-2-OL 3-PENTEN-2-OL 1569-50-2 C5H10O
4-N-BUTYLTOLUENE 4-N-BUTYLTOLUENE 1595-05-7 C11H16
(R)-1,2-EPOXYHEPTANE (R)-1,2-EPOXYHEPTANE 110549-07-0 C7H14O
POLYSTYRENE SULFONATE, AMMONIUM SALT POLYSTYRENE SULFONATE, AMMONIUM SALT 29965-34-2 C8H11NO3S
3-BROMOPYRUVIC ACID HYDRATE, 98 3-BROMOPYRUVIC ACID HYDRATE, 98 206860-50-6 C3H3BrO3.xH2O
DEA NONOATE DEA NONOATE 138475-09-9 C4H12N3NaO2
BUT-3-YN-1-AMINE BUT-3-YN-1-AMINE 14044-63-4 C4H7N
2-ETHYL-2-HYDROXYBUTYRIC ACID 2-ETHYL-2-HYDROXYBUTYRIC ACID 3639-21-2 C6H12O3
sodium 5-sulphosalicylate sodium 5-sulphosalicylate 831-54-9 C7H7NaO6S
sodium 2-[methyl(1-oxooctadecyl)amino]ethanesulphonate sodium 2-[methyl(1-oxooctadecyl)amino]ethanesulphonate 149-39-3 C21H42NNaO4S
nifuraldezone nifuraldezone 3270-71-1 C7H6N4O5
tetradecyl methacrylate tetradecyl methacrylate 2549-53-3 C18H34O2
disodium 7-hydroxynaphthalene-1,3-disulphonate disodium 7-hydroxynaphthalene-1,3-disulphonate 842-19-3 C10H9NaO7S2
5-NITRO-2-FURALDEHYDE (4-HYDROXY-6-METHYLPYRIMIDIN-2-YL)-HYDRAZONE 5-NITRO-2-FURALDEHYDE (4-HYDROXY-6-METHYLPYRIMIDIN-2-YL)-HYDRAZONE 13293-13-5 C10H9N5O4
AMMONIUM METHANESULFONATE AMMONIUM METHANESULFONATE 22515-76-0 CH3O3S.NH4
TRIHEXYLTETRADECYLPHOSPHONIUM DICYANAMIDE TRIHEXYLTETRADECYLPHOSPHONIUM DICYANAMIDE 701921-71-3 C32H68P.C2N3
BENZENESULFONYL AZIDE POLYMER-SUPPORTED 1.8-2.2 MMOL/G ON POLYSTYRENE BENZENESULFONYL AZIDE POLYMER-SUPPORTED 1.8-2.2 MMOL/G ON POLYSTYRENE C6H5N3O2S
2-Bromophenylmethylsulfoxide 2-Bromophenylmethylsulfoxide 7321-58-6 C7H7BrOS
4(1H)-Pyrimidinethione, 2-amino-6-methyl- (9CI) 4(1H)-Pyrimidinethione, 2-amino-6-methyl- (9CI) 6307-44-4 C5H7N3S
2-(Dicyclohexylphosphino)-1-(2,4,6-trimethyl-phenyl)-1H-imidazole 2-(Dicyclohexylphosphino)-1-(2,4,6-trimethyl-phenyl)-1H-imidazole 794527-14-3 C24H35N2P
α-Olefin sulfonic acid salts α-Olefin sulfonic acid salts
2-Amino-1-(trideuteromethyl)-6-Phenylimidazo[4,5-b] pyridine 2-Amino-1-(trideuteromethyl)-6-Phenylimidazo[4,5-b] pyridine 210049-13-1 C13H9D3N4
Sodiumhydroxymethylenesulfonate Sodiumhydroxymethylenesulfonate CH2Na2O7S2
(1S,1S',2R,2R')-(+)-1,1'-DI-T-BUTYL-[2,2']-DIPHOSPHOLANE (1S,1S',2R,2R')-(+)-1,1'-DI-T-BUTYL-[2,2']-DIPHOSPHOLANE 470480-32-1 C16H32P2
(R)-(+)-2,2'-Bis[di(3,5-di-t-butylphenyl)phosphino]-6,6'-dimethoxy-1,1'-biphenyl,min.97% (R)-(+)-2,2'-Bis[di(3,5-di-t-butylphenyl)phosphino]-6,6'-dimethoxy-1,1'-biphenyl,min.97% 192138-05-9 C70H96O2P2
1,2- DIMETHYL SULFONIC ACID SODIUM BENZENE 1,2- DIMETHYL SULFONIC ACID SODIUM BENZENE
1,2,3-cyclopropanetri-carboxylic acid 1,2,3-cyclopropanetri-carboxylic acid 705-35-1 C6H6O6
1-MERCAPTO-2-PROPANOL 1-MERCAPTO-2-PROPANOL 1068-47-9 C3H8OS
salicylaldehyde carbohydrazone salicylaldehyde carbohydrazone 6638-49-9 C15H14N4O3
4-Hex-1-ynylbenzaldehyde 4-Hex-1-ynylbenzaldehyde 175203-90-4 C13H14O
Platelet Activating Factor-16 Platelet Activating Factor-16 74389-68-7 C26H54NO7P
1-Bromocyclohex-1-ene 1-Bromocyclohex-1-ene 2044-08-8 C6H9Br
N-HYDROXY-2-[4-(2-METHOXYPHENYL)PIPERAZIN-1-YL]ETHANIMIDAMIDE N-HYDROXY-2-[4-(2-METHOXYPHENYL)PIPERAZIN-1-YL]ETHANIMIDAMIDE 261623-50-1 C13H20N4O2
BENZO[A]PYRENE-D12 BENZO[A]PYRENE-D12 63466-71-7 C20D12
1-(2-CARBOXYPHENYL)PIPERAZINE 1-(2-CARBOXYPHENYL)PIPERAZINE C11H14N2O2
ACETO-D3-PHENONE ACETO-D3-PHENONE 17537-31-4 C8H5D3O
BENZO[B]SELENOPHENE BENZO[B]SELENOPHENE 272-30-0 C8H6Se
cataCXium(R)  FSulf cataCXium(R) FSulf 1039775-34-2 C34H43O10PS3
cataCXium(R)  FPrPh,  Dicyclohexyl[9-(3-phenylpropyl)-9-fluorenyl]phosphine  tetrafluoroborate cataCXium(R) FPrPh, Dicyclohexyl[9-(3-phenylpropyl)-9-fluorenyl]phosphine tetrafluoroborate 1007311-95-6 C34H42BF4P
(11bR)-2,6-Di-9-anthracenyl-4-hydroxy-dinaphtho[2,1-d:1μ,2μ-f][1,3,2]dioxaphosphepin-4-oxide (11bR)-2,6-Di-9-anthracenyl-4-hydroxy-dinaphtho[2,1-d:1μ,2μ-f][1,3,2]dioxaphosphepin-4-oxide 361342-51-0 C48H29O4P
2-Azido-1-(1,3-benzodioxol-5-yl)ethanone 2-Azido-1-(1,3-benzodioxol-5-yl)ethanone 102831-07-2 C9H7N3O3
Ethyl 2-(2-cyanophenoxy)acetate ,96% Ethyl 2-(2-cyanophenoxy)acetate ,96% 39786-34-0 C11H11NO3
(S)-Tetrahydro-1,3,3-triphenyl-1H,3H-pyrrolo[1,2-c][1,3,2]oxaborole, 99%  (S)-Phenyl oxazaborolidine (S)-Tetrahydro-1,3,3-triphenyl-1H,3H-pyrrolo[1,2-c][1,3,2]oxaborole, 99% (S)-Phenyl oxazaborolidine 131180-90-0 C23H22BNO
HEPTAKIS-6-(DIMETHYL-TERT-BUTYLSILYL)-BETA-CYCLODEXTRIN HEPTAKIS-6-(DIMETHYL-TERT-BUTYLSILYL)-BETA-CYCLODEXTRIN 123155-03-3 C84H168O35Si7
(S,S)-1-DICYCLOHEXYLPHOSPHINO-2-[1-(DICYCLOHEXYLPHOSPHINO)ETHYL]FERROCENE (S,S)-1-DICYCLOHEXYLPHOSPHINO-2-[1-(DICYCLOHEXYLPHOSPHINO)ETHYL]FERROCENE 158923-07-0 C36H56FeP210*
CHRYSENE-D12 CHRYSENE-D12 1719-03-5 C18D12
N-ethyl-propiolamide N-ethyl-propiolamide 2682-33-9 C5H7NO
Sodium 3-pyridylsulfinate Sodium 3-pyridylsulfinate 123151-15-5 C5H4NNaO2S
1-BUTYLPYRIDINIUM BIS(TRIFLUOROMETHYLSULFONYL)IMIDE 1-BUTYLPYRIDINIUM BIS(TRIFLUOROMETHYLSULFONYL)IMIDE 187863-42-9 C11H14F6N2O4S2
1-octyl-2,3-dimethylimidazolium tetrafluoroborate 1-octyl-2,3-dimethylimidazolium tetrafluoroborate 865606-94-6 C13H25BF4N2
(4R)-2-Methyl-4,5,5-triphenyl-1,3,2-oxazaborolidine (4R)-2-Methyl-4,5,5-triphenyl-1,3,2-oxazaborolidine 155268-88-5 C21H20BNO
thiazol-4-ylboronic acid
thiazol-4-ylboronic acid 1016642-07-1 C3H4BNO2S
Cyclodextrin glucanotransferase Cyclodextrin glucanotransferase
1-Butanethiol, 4-[4-[(1E)-phenylazo]phenoxy]- (9CI) 1-Butanethiol, 4-[4-[(1E)-phenylazo]phenoxy]- (9CI) 220473-94-9 C16H18N2OS
Bicalutamide Sulfoxide Bicalutamide Sulfoxide 945419-64-7 C18H14F4N2O3S
N-hydroxy Rhodamine B amide N-hydroxy Rhodamine B amide 1115867-62-3 C28H31N3O3
N,N,N-Trimethyladamantan-1-aminium hydroxide N,N,N-Trimethyladamantan-1-aminium hydroxide 53075-09-5 C13H25NO
N-(5-Chloro-2,1,3-benzothiadiazol-4-yl)thiourea N-(5-Chloro-2,1,3-benzothiadiazol-4-yl)thiourea 51323-05-8 C7H5ClN4S2
ETHYL-D5 ACETATE-D3 ETHYL-D5 ACETATE-D3 117121-81-0 C4D8O2
N-tert-Butyl-N-(2-Methyl-1-phenylpropyl)-O-(1-phenylethyl)hydroxylaMine N-tert-Butyl-N-(2-Methyl-1-phenylpropyl)-O-(1-phenylethyl)hydroxylaMine 227000-59-1 C22H31NO
poly(L-lactide) poly(L-lactide) 33135-50-1 C6H8O4
(11AR)-(+)-10,11,12,13-TETRAHYDRODIINDENO[7,1-DE:1',7'-FG][1,3,2]DIOXAPHOSPHOCIN-5-DIMETHYLAMINE (11AR)-(+)-10,11,12,13-TETRAHYDRODIINDENO[7,1-DE:1',7'-FG][1,3,2]DIOXAPHOSPHOCIN-5-DIMETHYLAMINE 443965-14-8 C19H20NO2P
HomePage | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase
Copyright © 2016 ChemicalBook All rights reserved.
枞阳县| 三穗县| 巴彦县| 名山县| 津市市| 罗山县| 濮阳县| 公安县| 光泽县| 通辽市| 赣州市| 伊春市| 彩票| 和政县| 册亨县| 武义县| 桂平市| 绍兴市| 孟州市| 定西市| 金山区| 连云港市| 宜兰市| 瓦房店市| 临朐县| 普兰县| 东乡族自治县| 越西县| 芦山县| 九台市| 韩城市| 棋牌| 新竹县| 佛坪县| 革吉县| 宜州市| 凤台县| 梅州市| 唐河县| 尼勒克县| 抚远县|