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
Acetoacetanilide-4-sulfonic acid potassium salt Acetoacetanilide-4-sulfonic acid potassium salt C10H10KNO5S
3-METHYL-2-NITROBENZALDEHYDE 3-METHYL-2-NITROBENZALDEHYDE 5858-27-5 C8H7NO3
4,4'-DICYANOSTILBENE 4,4'-DICYANOSTILBENE 5216-36-4 C16H8N2
3-(4-NITRO-PHENYL)-PROPIONALDEHYDE 3-(4-NITRO-PHENYL)-PROPIONALDEHYDE 80793-24-4 C9H9NO3
AZO-TERT-BUTANE AZO-TERT-BUTANE 927-83-3 C8H18N2
9,10-ANTHRACENEDICARBOXALDEHYDE 9,10-ANTHRACENEDICARBOXALDEHYDE 7044-91-9 C16H10O2
METHYL 2-ETHYLACETOACETATE METHYL 2-ETHYLACETOACETATE 51756-08-2 C7H12O3
2-(CARBOXYMETHOXY)BENZOIC ACID 2-(CARBOXYMETHOXY)BENZOIC ACID 635-53-0 C9H8O5
AROMADENDRENE OXIDE 2 AROMADENDRENE OXIDE 2 85710-39-0 C15H24O
(R)-(+)-BORNYLAMINE (R)-(+)-BORNYLAMINE 32511-34-5 C10H19N
NITRIC ACID-D NITRIC ACID-D 13587-52-5 DNO3
1-BUTYL-3-METHYLIMIDAZOLIUM HEXAFLUOROAN 1-BUTYL-3-METHYLIMIDAZOLIUM HEXAFLUOROAN 174645-81-9 C8F6H15N2Sb1
RAC PROPANOLOL-D7 RAC PROPANOLOL-D7 98897-23-5 C16H14D7NO2
1-(3 4-DICHLOROPHENYL)BIGUANIDE  HYDROC& 1-(3 4-DICHLOROPHENYL)BIGUANIDE HYDROC& 21703-08-2 C8H10Cl3N5
5-[4-(TERT-BUTYL)PHENYL]-1,3,4-OXADIAZOLE-2-THIOL 5-[4-(TERT-BUTYL)PHENYL]-1,3,4-OXADIAZOLE-2-THIOL 306936-90-3 C12H14N2OS
AZODICARBOXYLIC ACID DIMETHYL ESTER AZODICARBOXYLIC ACID DIMETHYL ESTER 2446-84-6 C4H6N2O4
3,7-DIAMINO-2,8-DIMETHYLDIBENZOTHIOPHENE SULFONE (S,S-DIOXIDE)(CONTAINS 2,6-DIMETHYL ISOMER) 3,7-DIAMINO-2,8-DIMETHYLDIBENZOTHIOPHENE SULFONE (S,S-DIOXIDE)(CONTAINS 2,6-DIMETHYL ISOMER) C14H14N2O4S
2,4-DINITROPHENYL ACETATE,95% 2,4-DINITROPHENYL ACETATE,95% 4232-27-3 C8H6N2O6
beta-Xylopyranosyl azide beta-Xylopyranosyl azide 51368-20-8 C5H9N3O4
3-Methyl-4-pyridinethiol 3-Methyl-4-pyridinethiol 10351-13-0 C6H7NS
Alprostadil alfadex Alprostadil alfadex 55648-20-9 C56H94O35
rac 4-Azido Deprenyl rac 4-Azido Deprenyl 1216800-93-9 C13H16N4
Haloperidol-d4 Haloperidol-d4 1189986-59-1 C21H19ClD4FNO2
3,3'-Sulfonylbis[6-fluoroaniline] 3,3'-Sulfonylbis[6-fluoroaniline] 40939-65-9 C12H10F2N2O2S
O-(tert-butyldiphenylsilyl)hydroxylamine O-(tert-butyldiphenylsilyl)hydroxylamine 103587-51-5 C16H21NOSi
(4S,4aS,5aR,12aS)-9-Amino-4,7-bis(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,10,12,12a-tetrahydroxy-1,11-dioxo-2-naphthacenecarboxamide sulfate (4S,4aS,5aR,12aS)-9-Amino-4,7-bis(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,10,12,12a-tetrahydroxy-1,11-dioxo-2-naphthacenecarboxamide sulfate 149934-20-3 C23H28N4O7.H2SO4
4-p-Terphenylboronic Acid 4-p-Terphenylboronic Acid C18H15BO2
TEREPHTHALIC-D4 ACID TEREPHTHALIC-D4 ACID 60088-54-2 C8H2D4O4
TETRAHEXYLAMMONIUM CHLORIDE TETRAHEXYLAMMONIUM CHLORIDE 5922-92-9 C24H52ClN
4-[(9-BETA-D-RIBOFURANOSYL-9H-PURIN-6-YL)AMINO]-BENZENESULFONIC ACID SODIUM 4-[(9-BETA-D-RIBOFURANOSYL-9H-PURIN-6-YL)AMINO]-BENZENESULFONIC ACID SODIUM 143668-15-9 C16H17N5O7S
CHEMBRDG-BB 4016588 CHEMBRDG-BB 4016588 915923-05-6 C7H11NOS
METHYL FORMATE-D METHYL FORMATE-D 23731-38-6 C2H3DO2
CARBOFURAN D3 CARBOFURAN D3 1007459-98-4 C12H12D3NO3
(3-BENZYLOXY-PHENYL)-HYDRAZINE HYDROCHLORIDE (3-BENZYLOXY-PHENYL)-HYDRAZINE HYDROCHLORIDE 59146-68-8 C13H15ClN2O
4-BROMO-4'-NITROBIPHENYL 4-BROMO-4'-NITROBIPHENYL 6242-98-4 C12H8BrNO2
METHOXYPOLY(ETHYLENE GLYCOL) THIOL METHOXYPOLY(ETHYLENE GLYCOL) THIOL
3-ETHYL-3-METHYLGLUTARIC ANHYDRIDE 3-ETHYL-3-METHYLGLUTARIC ANHYDRIDE 6970-57-6 C8H12O3
3-(4-AZIDOPHENYL)PROPIONIC ACID 3-(4-AZIDOPHENYL)PROPIONIC ACID 103489-31-2 C9H9N3O2
N,N-DIETHYLTHIOUREA N,N-DIETHYLTHIOUREA C5H12N2S
POLY(DIBENZO-18-CROWN-6) POLY(DIBENZO-18-CROWN-6) 53660-42-7 C21H26O7
(11AR)-(+)-10,11,12,13-TETRAHYDRODIINDENO[7,1-DE:1',7'-FG][1,3,2]DIOXAPHOSPHOCIN-5-PHENOXY (11AR)-(+)-10,11,12,13-TETRAHYDRODIINDENO[7,1-DE:1',7'-FG][1,3,2]DIOXAPHOSPHOCIN-5-PHENOXY 656233-53-3 C23H19O3P
4-(1H-PYRAZOL-1-YL)PHENYL ISOTHIOCYANATE 4-(1H-PYRAZOL-1-YL)PHENYL ISOTHIOCYANATE 352018-96-3 C10H7N3S
3-ETHOXY-1,2-PROPANEDIOL 3-ETHOXY-1,2-PROPANEDIOL 1874-62-0 C5H12O3
(11AR)-(+)-10,11,12,13-TETRAHYDRODIINDENO[7,1-DE:1',7'-FG][1,3,2]DIOXAPHOSPHOCIN-5-BIS(R)-1PHENYLETHYL]AMINE (11AR)-(+)-10,11,12,13-TETRAHYDRODIINDENO[7,1-DE:1',7'-FG][1,3,2]DIOXAPHOSPHOCIN-5-BIS(R)-1PHENYLETHYL]AMINE 500997-70-6 C33H32NO2P
CIS-4-DECENE CIS-4-DECENE 19398-88-0 C10H20
1-BUTANOL-D10 1-BUTANOL-D10 34193-38-9 C4D10O
4-FLUORO-3-TRIFLUOROMETHYLPHENYL ISOTHI& 4-FLUORO-3-TRIFLUOROMETHYLPHENYL ISOTHI& 302912-43-2 C8H3F4NS
1,3-BIS(3-PYRIDYLMETHYL)-2-THIOUREA, 97 1,3-BIS(3-PYRIDYLMETHYL)-2-THIOUREA, 97 6965-01-1 C13H14N4S
(S)-1-{(R)-2-[BIS[3,5-BIS(TRIFLUOROMETHYL)PHENYL]PHOSPHINO]-FERROCENYL}ETHYLDICY (S)-1-{(R)-2-[BIS[3,5-BIS(TRIFLUOROMETHYL)PHENYL]PHOSPHINO]-FERROCENYL}ETHYLDICY 849923-15-5 C35H35F12P2.C5H5.Fe
(R)-1-{(S)-2-[DI(2-FURYL)PHOSPHINO]FERROCENYL}ETHYLDI(3,5-XYLYL)PHOSPHINE (R)-1-{(S)-2-[DI(2-FURYL)PHOSPHINO]FERROCENYL}ETHYLDI(3,5-XYLYL)PHOSPHINE 649559-65-9 C31H31O2P2.C5H5.Fe
(R)-1-[(S)-2-(DI-TERT.-BUTYLPHOSPHINO)FERROCENYL]ETHYLBIS(2-METHYLPHENYL)PHOSPHI (R)-1-[(S)-2-(DI-TERT.-BUTYLPHOSPHINO)FERROCENYL]ETHYLBIS(2-METHYLPHENYL)PHOSPHI 849924-76-1 C34H38FeP2
4-AMINOBENZO-18-CROWN-6 SESQUIHYDRATE HYDROCHLORIDE, 99 4-AMINOBENZO-18-CROWN-6 SESQUIHYDRATE HYDROCHLORIDE, 99 205504-06-9 C16H25NO6.ClH.H2O
DICHLORO(DIISOPROPYLAMINO)BORANE DICHLORO(DIISOPROPYLAMINO)BORANE 44873-49-6 C6H14BCl2N
2-PHENOXYETHANETHIOL 2-PHENOXYETHANETHIOL 6338-63-2 C8H10OS
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
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
CYCLOBUTYLHYDRAZINE CYCLOBUTYLHYDRAZINE 742673-64-9 C4H10N2
3-CHLOROPROPYL THIOACETATE 3-CHLOROPROPYL THIOACETATE 13012-54-9 C5H9ClOS
4-NITROPHENOL SODIUM SALT HYDRATE 4-NITROPHENOL SODIUM SALT HYDRATE 63317-67-9 C6H8NNaO5
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
LIANOSULFONIC ACID, SODIUM SALT, DESULFONATED LIANOSULFONIC ACID, SODIUM SALT, DESULFONATED 68512-34-5
DIMETHYLGUANIDINE DIMETHYLGUANIDINE 3324-71-8 C3H9N3
METHACROLEIN-DNPH METHACROLEIN-DNPH 5077-73-6 C10H10N4O4
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
PERFLUOROOCTANESULPHONYL CHLORIDE PERFLUOROOCTANESULPHONYL CHLORIDE 423-60-9 C8ClF17O2S
(1S,2S)-trans-1,2-Cyclopentanediamine  dihydrochloride (1S,2S)-trans-1,2-Cyclopentanediamine dihydrochloride 477873-22-6 C5H12N22HCl
3-Chloro-N-methylbenzamide ,98% 3-Chloro-N-methylbenzamide ,98% 18370-10-0 C8H8ClNO
5-AMINO-2-FLUOROBENZONITRILE 5-AMINO-2-FLUOROBENZONITRILE 37705-82-1 C7H7N3
2',4',5'-Trihydroxybutyrophenone 2',4',5'-Trihydroxybutyrophenone 1421-63-2 C10H12O4
2-(METHYLTHIO)CYCLOHEXANONE 2-(METHYLTHIO)CYCLOHEXANONE 52190-35-9 C7H12OS
METHYL 3-(TRIFLUOROMETHYL)PHENYLACETATE METHYL 3-(TRIFLUOROMETHYL)PHENYLACETATE 62451-84-7 C10H9F3O2
2-NITRO-P-TOLYL DISULFIDE 2-NITRO-P-TOLYL DISULFIDE 35350-31-3 C14H12N2O4S2
2-Azidopropane 2-Azidopropane 691-57-6 C3H7N3
2-(N-T-BUTOXYCARBONYLAMINO)ETHYLISOCYANIDE 2-(N-T-BUTOXYCARBONYLAMINO)ETHYLISOCYANIDE 215254-91-4 C8H14N2O2
DIISOPROPOXYMETHYLBORANE DIISOPROPOXYMETHYLBORANE 86595-27-9 C7H17BO2
N-(4-BROMO-PHENYL)-GUANIDINE N-(4-BROMO-PHENYL)-GUANIDINE 67453-81-0 C7H8BrN3
(DIMETHYLHYDRAZONO)ACETALDEHYDE (DIMETHYLHYDRAZONO)ACETALDEHYDE 62506-63-2 C4H8N2O
5-CHLORO-2-FLUOROPHENYL ISOTHIOCYANATE 5-CHLORO-2-FLUOROPHENYL ISOTHIOCYANATE 247170-25-8 C7H3ClFNS
4-MorpholinobenziMidaMide 4-MorpholinobenziMidaMide 1019575-98-4 C11H15N3O
N-Cyano-N'-5-quinolinylguanidine N-Cyano-N'-5-quinolinylguanidine 861393-75-1 C11H9N5
HomePage | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase
Copyright © 2016 ChemicalBook All rights reserved.
内江市| 秭归县| 丰顺县| 衡南县| 来安县| 台江县| 陇西县| 凤山市| 施秉县| 罗定市| 福建省| 乌拉特后旗| 正定县| 陕西省| 巩留县| 四川省| 晋江市| 桓台县| 卓尼县| 诸城市| 伊通| 桂阳县| 彰武县| 于田县| 博湖县| 卓尼县| 双辽市| 海丰县| 云和县| 嘉义市| 高邮市| 大埔区| 寻乌县| 保定市| 郎溪县| 北海市| 丰原市| 扶余县| 高唐县| 江安县| 靖边县|