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-NITRO-P-TOLYL DISULFIDE 2-NITRO-P-TOLYL DISULFIDE 35350-31-3 C14H12N2O4S2
DIISOPROPOXYMETHYLBORANE DIISOPROPOXYMETHYLBORANE 86595-27-9 C7H17BO2
N-(4-BROMO-PHENYL)-GUANIDINE N-(4-BROMO-PHENYL)-GUANIDINE 67453-81-0 C7H8BrN3
2-Azidopropane 2-Azidopropane 691-57-6 C3H7N3
2-(N-T-BUTOXYCARBONYLAMINO)ETHYLISOCYANIDE 2-(N-T-BUTOXYCARBONYLAMINO)ETHYLISOCYANIDE 215254-91-4 C8H14N2O2
DIMETHYLGUANIDINE DIMETHYLGUANIDINE 3324-71-8 C3H9N3
METHACROLEIN-DNPH METHACROLEIN-DNPH 5077-73-6 C10H10N4O4
LIANOSULFONIC ACID, SODIUM SALT, DESULFONATED LIANOSULFONIC ACID, SODIUM SALT, DESULFONATED 68512-34-5
3-Chloro-N-methylbenzamide ,98% 3-Chloro-N-methylbenzamide ,98% 18370-10-0 C8H8ClNO
SODIUM EQUILIN-2,4,16,16-D4 SULFATE SODIUM EQUILIN-2,4,16,16-D4 SULFATE 285979-81-9 C18H16D4O5S.Na
TERT-BUTYL (3R)-3-AMINO-3-PHENYLPROPANOATE TERT-BUTYL (3R)-3-AMINO-3-PHENYLPROPANOATE 161671-34-7 C13H19NO2
(1S,2S)-trans-1,2-Cyclopentanediamine  dihydrochloride (1S,2S)-trans-1,2-Cyclopentanediamine dihydrochloride 477873-22-6 C5H12N22HCl
PERFLUOROOCTANESULPHONYL CHLORIDE PERFLUOROOCTANESULPHONYL CHLORIDE 423-60-9 C8ClF17O2S
2-(2-FORMYL-PHENOXY)-PROPIONIC ACID 2-(2-FORMYL-PHENOXY)-PROPIONIC ACID 29040-34-4 C10H10O4
POLY(VINYLSULFONIC ACID, SODIUM SALT) POLY(VINYLSULFONIC ACID, SODIUM SALT) 9002-97-5 C2H5NaO3S
CYCLOBUTYLHYDRAZINE CYCLOBUTYLHYDRAZINE 742673-64-9 C4H10N2
4-NITROPHENOL SODIUM SALT DIHYDRATE 4-NITROPHENOL SODIUM SALT DIHYDRATE 63317-67-9 C6H8NNaO5
3-CHLOROPROPYL THIOACETATE 3-CHLOROPROPYL THIOACETATE 13012-54-9 C5H9ClOS
TRIETHANOLAMINE SALICYLATE TRIETHANOLAMINE SALICYLATE 2174-16-5 C13H21NO6
7-METHYL-1,6-OCTADIENE 7-METHYL-1,6-OCTADIENE 42152-47-6 C9H16
ETHYL (3-HYDROXYPHENYL)CARBAMATE ETHYL (3-HYDROXYPHENYL)CARBAMATE 7159-96-8 C9H11NO3
1,8-DIISOCYANATOOCTANE 1,8-DIISOCYANATOOCTANE 10124-86-4 C10H16N2O2
4-MERCAPTO-1-BUTANOL 4-MERCAPTO-1-BUTANOL 14970-83-3 C4H10OS
3-CYCLOHEXENE-1,1-DIMETHANOL 3-CYCLOHEXENE-1,1-DIMETHANOL 2160-94-3 C8H14O2
9-Ethyl-3-nitrocarbazole 9-Ethyl-3-nitrocarbazole 86-20-4 C14H12N2O2
1,2-DICHLOROTRIFLUOROETHYL TRIFLUOROMETHYL ETHER 1,2-DICHLOROTRIFLUOROETHYL TRIFLUOROMETHYL ETHER 2356-53-8 C3Cl2F6O
3-Cyanobenzylsulfonyl chloride 3-Cyanobenzylsulfonyl chloride 56106-01-5 C8H6ClNO2S
Sodium 2,4,5-trichlorobenzenesulphonate Sodium 2,4,5-trichlorobenzenesulphonate 53423-65-7 C6H2Cl3NaO3S
sodium 2-[methyl(1-oxotetradecyl)amino]ethanesulphonate sodium 2-[methyl(1-oxotetradecyl)amino]ethanesulphonate 18469-44-8 C27H51NaO3
N-Phospho-L-arginine N-Phospho-L-arginine 1189-11-3 C6H15N4O5P
Copper phthalocyanine disulfonic acid Copper phthalocyanine disulfonic acid 29188-28-1 C32H16CuN8O6S2
12-MERCAPTODODECANOIC ACID 12-MERCAPTODODECANOIC ACID 82001-53-4 C12H24O2S
(R)-(6,6'-Dimethoxybiphenyl-2,2'-diyl)bis[bis(3,5-di-tert-butyl-4-methoxypheny (R)-(6,6'-Dimethoxybiphenyl-2,2'-diyl)bis[bis(3,5-di-tert-butyl-4-methoxypheny 352655-61-9 C74H104O6P2
(R)-O-TOLYL-CBS-OXAZABOROLIDINE, 0.5M I& (R)-O-TOLYL-CBS-OXAZABOROLIDINE, 0.5M I& 865812-10-8 C24H24BNO
S-TERT-BUTYL CHLOROTHIOFORMATE, 96% S-TERT-BUTYL CHLOROTHIOFORMATE, 96% 13889-95-7 C5H9ClOS
P-CHLOROPHENYL METHYL SULFOXIDE P-CHLOROPHENYL METHYL SULFOXIDE 934-73-6 C7H7ClOS
Benzenecarboximidamide, 4-amino-2-fluoro- (9CI) Benzenecarboximidamide, 4-amino-2-fluoro- (9CI) 556814-98-3 C7H8FN3
2-METHYLPROPYLHYDRAZINE HYDROCHLORIDE 2-METHYLPROPYLHYDRAZINE HYDROCHLORIDE 205985-97-3 C9H8BrNO3
HEXAPHENOL HEXAPHENOL 1506-76-9 C21H18O6
MagnesiuM taurinate MagnesiuM taurinate C4H12MgN2O6S2
Magnesium lignosulfonate Magnesium lignosulfonate
Tetrabutylammonium nitrite Tetrabutylammonium nitrite 26501-54-2 C16H36N2O2
CBPS-Na CBPS-Na
Amidapsone Amidapsone 3569-77-5 C13H13N3O3S
(S)-(-)-2,2'-Bis[di(3,5-di-t-butylphenyl)phosphino]-6,6'-dimethoxy-1,1'-biphenyl,min.97% (S)-(-)-2,2'-Bis[di(3,5-di-t-butylphenyl)phosphino]-6,6'-dimethoxy-1,1'-biphenyl,min.97% 167709-31-1 C70H96O2P2
thiometon-sulfoxide thiometon-sulfoxide 2703-37-9 C6H15O3PS3
METHANOL-D3 METHANOL-D3 1849-29-2 CHD3O
DIMETHYL-D 6-AMINE HYDROCHLORIDE DIMETHYL-D 6-AMINE HYDROCHLORIDE 53170-19-7 C2HD6N.ClH
(+)-D-PYROGLUTAMOL P-TOLUENESULFONATE (+)-D-PYROGLUTAMOL P-TOLUENESULFONATE 128899-31-0 C12H15NO4S
2,5-Dimethoxybenzylbromide 2,5-Dimethoxybenzylbromide 60732-17-4 C9H11BrO2
Cresol-formaldehyde copolymer 1,2-naphthoquinonediazide-5-sulfonate Cresol-formaldehyde copolymer 1,2-naphthoquinonediazide-5-sulfonate 76169-06-7 (C10H6N2O4S)x.(C7H8O)n.(CH2O)n
4-Dimethylphenylboronic acid 4-Dimethylphenylboronic acid C8H11BO2
alpha-Azido-omega-hydroxy octa(ethylene glycol) alpha-Azido-omega-hydroxy octa(ethylene glycol) 352439-36-2 C16H33N3O8
4-CHLORO-1H-INDOLE-3-CARBOXAMIDINE 4-CHLORO-1H-INDOLE-3-CARBOXAMIDINE C9H8ClN3
1,2,4-TRIETHYLBENZENE 1,2,4-TRIETHYLBENZENE 877-44-1 C12H18
6,6'-Oxybis- 6,6'-Oxybis- 61551-82-4 C20H15NaO7S2
Aziode Dextrose Broth Aziode Dextrose Broth
N-(2-methoxyethyl)guanidine(SALTDATA: AcOH) N-(2-methoxyethyl)guanidine(SALTDATA: AcOH) 108712-07-8 C4H11N3O
5-(4-Chlorophenyl)-1,3,4-thiadiazole-2-thiol, 96% 5-(4-Chlorophenyl)-1,3,4-thiadiazole-2-thiol, 96% 63857-85-2 C8H5ClN2S2
Thioacetic acid S-[4-[4-(4-acetylsulfanylphenylethynyl)-phenylethynyl]-phenyl] ester Thioacetic acid S-[4-[4-(4-acetylsulfanylphenylethynyl)-phenylethynyl]-phenyl] ester 267007-83-0 C26H18O2S2
2,4,4-TRIMETHYL-1-PENTANOL 2,4,4-TRIMETHYL-1-PENTANOL 16325-63-6 C8H18O
1-Azido-4-chlorobenzene solution 1-Azido-4-chlorobenzene solution 3296-05-7 C6H4ClN3
N-HYDROXY-3-OXO-3-PYRROLIDIN-1-YLPROPANIMIDAMIDE N-HYDROXY-3-OXO-3-PYRROLIDIN-1-YLPROPANIMIDAMIDE 57399-51-6 C7H13N3O2
(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 443965-10-4 C19H20NO2P
BENZYL 2,2,2-TRIFLUOROETHYL SULFIDE BENZYL 2,2,2-TRIFLUOROETHYL SULFIDE 77745-03-0 C9H9F3S
TRI(PROPYLENE GLYCOL) BUTYL ETHER TRI(PROPYLENE GLYCOL) BUTYL ETHER 55934-93-5 C13H28O4
ALPHA,BETA-DICHLOROACRYLONITRILE ALPHA,BETA-DICHLOROACRYLONITRILE 22410-58-8 C3HCl2N
2-AMINOFLUORENE-9-13C 2-AMINOFLUORENE-9-13C 335081-08-8 C13H11N
4-DIMETHYLAMINO-BENZAMIDINE 4-DIMETHYLAMINO-BENZAMIDINE 55978-60-4 C9H13N3
3,6,9-Triethyl-3,6,9-trimethyl-1,4,7-triperoxonane 3,6,9-Triethyl-3,6,9-trimethyl-1,4,7-triperoxonane 24748-23-0 C12H24O6
3-AMINO-PROPIONIC ACID ETHYL ESTER 3-AMINO-PROPIONIC ACID ETHYL ESTER 924-73-2 C5H11NO2
VANILLIN AZINE VANILLIN AZINE 1696-60-2 C16H16N2O4
4-AMINOBENZANILIDE 4-AMINOBENZANILIDE 782-45-6 C13H12N2O
2-CHLORO-1,1-DIFLUOROETHYLENE 2-CHLORO-1,1-DIFLUOROETHYLENE 359-10-4 C2HClF2
DIBROMOBORANE DIMETHYL SULFIDE COMPLEX DIBROMOBORANE DIMETHYL SULFIDE COMPLEX 55671-55-1 C2H10BBr2S
ACENAPHTHYLENE D8 ACENAPHTHYLENE D8 93951-97-4 C12D8
4-METHOXYBENZYLOXYCARBONYL AZIDE 4-METHOXYBENZYLOXYCARBONYL AZIDE 25474-85-5 C9H9N3O3
PROPYL (S)-(-)-LACTATE PROPYL (S)-(-)-LACTATE 53651-69-7 C6H12O3
ALPHA-APO-OXYTETRACYCLINE ALPHA-APO-OXYTETRACYCLINE 18695-01-7 C22H22N2O8
1-(2-BROMOETHOXY)-2-METHYLBENZENE 1-(2-BROMOETHOXY)-2-METHYLBENZENE 18800-32-3 C9H11BrO
NICOTINAMIDE-2,4,5,6-D4 NICOTINAMIDE-2,4,5,6-D4 347841-88-7 C6H2D4N2O
3-DIMETHYLAMINOBENZOYL CHLORIDE HYDROCHLORIDE 3-DIMETHYLAMINOBENZOYL CHLORIDE HYDROCHLORIDE 117500-61-5 C9H10ClNO
PYRIDINE-3-ISOCYANATE PYRIDINE-3-ISOCYANATE C6H4N2O
2,6-DIMETHOXYBENZYL ALCOHOL 2,6-DIMETHOXYBENZYL ALCOHOL 16700-55-3 C9H12O3
2-PROPANESULFONIC ACID SODIUM SALT 2-PROPANESULFONIC ACID SODIUM SALT 5399-58-6 C3H7NaO3S
1-BROMO-2 3-DIMETHOXYNAPHTHALENE  97 1-BROMO-2 3-DIMETHOXYNAPHTHALENE 97 222555-02-4 C12H11BrO2
ETHYL ACETOACETATE  SODIUM SALT ETHYL ACETOACETATE SODIUM SALT 20412-62-8 C7H9NO2
5-BROMO-2 3-DIMETHOXYBENZALDEHYDE  97 5-BROMO-2 3-DIMETHOXYBENZALDEHYDE 97 71295-21-1 C9H9BrO3
(R)-1-[(S)-2-[BIS(4-METHOXY-3,5-DIMETHYLPHENYL)PHOSPHINO]FERROCENYL}ETHYLDI-TERT (R)-1-[(S)-2-[BIS(4-METHOXY-3,5-DIMETHYLPHENYL)PHOSPHINO]FERROCENYL}ETHYLDI-TERT 187733-50-2 C33H47O2P2.C5H5.Fe
(R)-1-{(S)-2-[DI(1-NAPHTHYL)PHOSPHINO]FERROCENYL}ETHYLDI-TERT.-BUTYLPHOSPHINE (R)-1-{(S)-2-[DI(1-NAPHTHYL)PHOSPHINO]FERROCENYL}ETHYLDI-TERT.-BUTYLPHOSPHINE 849924-43-2 C35H39P2.C5H5.Fe
1,3,6-NAPHTHALENETRISULFONIC ACID, SODIUM SALT, HYDRATE, MIXTURE OF ISOMERS 1,3,6-NAPHTHALENETRISULFONIC ACID, SODIUM SALT, HYDRATE, MIXTURE OF ISOMERS 19437-42-4 C10H5Na3O9S3
HEPTAKIS-6-BROMO-6-DEOXY-BETA-CYCLODEXTRIN HEPTAKIS-6-BROMO-6-DEOXY-BETA-CYCLODEXTRIN 53784-83-1 C42H63Br7O28
P-TOLYL 2-(TRIMETHYLSILYL)ETHYNYL! P-TOLYL 2-(TRIMETHYLSILYL)ETHYNYL! 34452-56-7 C12H16O2SSi
R(+)-2 2'-BIS-(DIPHENYLPHOSPHINO)-6 6'-& R(+)-2 2'-BIS-(DIPHENYLPHOSPHINO)-6 6'-& 133545-16-1 C38H32O2P2
2-FLUORO-5-TRIFLUOROMETHYLPHENYL ISOTHI& 2-FLUORO-5-TRIFLUOROMETHYLPHENYL ISOTHI& 302912-40-9 C8H3F4NS
METHALLYL ISOTHIOCYANATE  TECH METHALLYL ISOTHIOCYANATE TECH 41834-90-6 C5H7NS
3-(TriMethylsilyl)propionic Acid SodiuM Salt 3-(TriMethylsilyl)propionic Acid SodiuM Salt 37013-20-0 C6H13NaO2Si
N,N'-DIBENZYLETHYLENEDIAMINE N,N'-DIBENZYLETHYLENEDIAMINE 14165-27-6 C16H20N2
4',4''(5'')-DI-TERT-BUTYLDICYCLOHEXANO-18-CROWN-6 4',4''(5'')-DI-TERT-BUTYLDICYCLOHEXANO-18-CROWN-6 28801-57-2 C28H52O6
DIBROMOMALEIC ACID DIBROMOMALEIC ACID 608-37-7 C4H2Br2O4
HomePage | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase
Copyright © 2016 ChemicalBook All rights reserved.