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
Pyridine, 2-(triethoxysilyl)- (9CI) Pyridine, 2-(triethoxysilyl)- (9CI) 213602-91-6 C11H19NO3Si
Homovanillyl alcohol Homovanillyl alcohol 2380-78-1 C9H12O3
CYCLOHEXYLTRIMETHYLAMMONIUM BIS(TRIFLUOROMETHANESULFONYL)IMIDE CYCLOHEXYLTRIMETHYLAMMONIUM BIS(TRIFLUOROMETHANESULFONYL)IMIDE 952155-74-7 C11H20F6N2O4S2
Boronic acid, [3-(4-morpholinylmethyl)phenyl]- (9CI) Boronic acid, [3-(4-morpholinylmethyl)phenyl]- (9CI) 397843-58-2 C11H16BNO3
3,4,5-Triiodobenzoic acid 3,4,5-Triiodobenzoic acid 2338-20-7 C7H3I3O2
TETRAMETHYLTETRASELENAFULVALENE TETRAMETHYLTETRASELENAFULVALENE 55259-49-9 C10H12Se4
1,3-BUTADIENE-1-CARBOXYLIC ACID METHYL ESTER 1,3-BUTADIENE-1-CARBOXYLIC ACID METHYL ESTER 1515-75-9 C6H8O2
BUTYLDICHLOROBORANE BUTYLDICHLOROBORANE 14090-22-3 C4H9BCl2
Mitoguazone Mitoguazone 459-86-9 C5H12N8
1,1-DIETHOXY-1-SILACYCLOPENT-3-ENE 1,1-DIETHOXY-1-SILACYCLOPENT-3-ENE 67059-49-8 C8H16O2Si
Rhodium(III) oxide pentahydrate Rhodium(III) oxide pentahydrate 39373-27-8 H10O8Rh2
5-(4-FLUOROPHENYL)-4H-1,2,4-TRIAZOLE-3-THIOL 5-(4-FLUOROPHENYL)-4H-1,2,4-TRIAZOLE-3-THIOL 114058-91-2 C8H6FN3S
[2-(3-CYCLOHEXENYL)ETHYL]TRICHLOROSILANE [2-(3-CYCLOHEXENYL)ETHYL]TRICHLOROSILANE 18290-60-3 C8H13Cl3Si
BIS(TRIMETHYLSILYL)ITACONATE BIS(TRIMETHYLSILYL)ITACONATE 55494-04-7 C11H22O4Si2
CYCLOHEXENE SULFIDE CYCLOHEXENE SULFIDE 286-28-2 C6H10S
2-TERT-BUTYLCYCLOHEXANONE 2-TERT-BUTYLCYCLOHEXANONE 1728-46-7 C10H18O
DICYCLOHEXYLDICHLOROSILANE DICYCLOHEXYLDICHLOROSILANE 18035-74-0 C12H22Cl2Si
POLY(VINYLSULFONIC ACID, SODIUM SALT) POLY(VINYLSULFONIC ACID, SODIUM SALT) 25053-27-4 C2H4O3S
N,N-bis(3-Trimethoxysilylpropyl)urea N,N-bis(3-Trimethoxysilylpropyl)urea 18418-53-6 C13H32N2O7Si2
decan-3-amine decan-3-amine 4088-36-2 C10H23N
4-PHOSPHONOOXY-TEMPO HYDRATE 4-PHOSPHONOOXY-TEMPO HYDRATE 22690-04-6 C9H21NO6P*
BIS(TRIDECAFLUORO-1,1,2,2-TETRAHYDROOCTYL)TETRAMETHYLDISILOXANE BIS(TRIDECAFLUORO-1,1,2,2-TETRAHYDROOCTYL)TETRAMETHYLDISILOXANE 71363-70-7 C20H20F26OSi2
5-FURAN-2-YL-[1,3,4]OXADIAZOLE-2-THIOL 5-FURAN-2-YL-[1,3,4]OXADIAZOLE-2-THIOL 13239-11-7 C6H4N2O2S
N-Ethyl-Hexylamine
N-Ethyl-Hexylamine 20352-67-4 C8H19N
2-(TRIMETHYLSILYL)ETHANESULFONIC ACID, SODIUM SALT 2-(TRIMETHYLSILYL)ETHANESULFONIC ACID, SODIUM SALT 18143-40-3 C5H15NaO3SSi
ETHYL 2-OXO-1-CYCLOOCTANECARBOXYLATE ETHYL 2-OXO-1-CYCLOOCTANECARBOXYLATE 4017-56-5 C11H18O3
DIETHYL 2-ACETYLGLUTARATE DIETHYL 2-ACETYLGLUTARATE 1501-06-0 C11H18O5
(3-T-BUTYL-5-METHYLPHENYL)BORONIC ACID (3-T-BUTYL-5-METHYLPHENYL)BORONIC ACID 193905-93-0 C11H17BO2
STYRYLETHYLTRIMETHOXYSILANE ,tech-90 STYRYLETHYLTRIMETHOXYSILANE ,tech-90 119181-19-0 C13H20O3Si
3-METHACRYLOXYPROPYLTRIS(METHOXYETHOXY)SILANE 3-METHACRYLOXYPROPYLTRIS(METHOXYETHOXY)SILANE 57069-48-4 C16H32O8Si
BIS(PENTACHLOROPHENYL) DISULFIDE BIS(PENTACHLOROPHENYL) DISULFIDE 22441-21-0 C12Cl10S2
DOWANOL(TM) PNB DOWANOL(TM) PNB 29387-86-8 C7H16O2
2-PROPENYLTRIMETHYLSILANE 2-PROPENYLTRIMETHYLSILANE 18163-07-0 C6H14Si
CHLOROMETHYLPHENYLSILANE CHLOROMETHYLPHENYLSILANE 1631-82-9 C7H9ClSi
4-N-HEXYLOXYBENZOYL CHLORIDE 4-N-HEXYLOXYBENZOYL CHLORIDE 39649-71-3 C13H17ClO2
2-ACETYL-4'-CHLORO DIPHENYL SULFIDE 2-ACETYL-4'-CHLORO DIPHENYL SULFIDE 41932-35-8 C14H11ClOS
2-METHYL-1-BUTANETHIOL 2-METHYL-1-BUTANETHIOL 187-18-8 C20H14N2O
1,1,3,3-TETRAVINYLDIMETHYLDISILOXANE 1,1,3,3-TETRAVINYLDIMETHYLDISILOXANE 16045-78-6 C10H18OSi2
sec-Butyl disulfide sec-Butyl disulfide 5943-30-6 C8H18S2
2,5-DIMETHYL-P-ANISALDEHYDE 2,5-DIMETHYL-P-ANISALDEHYDE 6745-75-1 C10H12O2
2-Furanbutanal, γ-azidotetrahydro-α,4-bis(1-Methylethyl)-5-oxo-, (αS, γS,2S,4S)- 2-Furanbutanal, γ-azidotetrahydro-α,4-bis(1-Methylethyl)-5-oxo-, (αS, γS,2S,4S)- 173154-02-4 C14H23N3O3
3-(4-METHOXY-PHENYL)-PROPIONALDEHYDE 3-(4-METHOXY-PHENYL)-PROPIONALDEHYDE 20401-88-1 C10H12O2
(4-ACETYL-PIPERAZIN-1-YL)-ACETIC ACID (4-ACETYL-PIPERAZIN-1-YL)-ACETIC ACID 705941-45-3 C8H14N2O3
3-CHLORO-4-FLUORO-BENZAMIDINE 3-CHLORO-4-FLUORO-BENZAMIDINE 504404-34-6 C7H6ClFN2
4-(tert-Butyl)benzyl mercaptan 4-(tert-Butyl)benzyl mercaptan 49543-63-7 C11H16S
Bufotaline Bufotaline 471-95-4 C26H36O6
(-)-Sparteine sulfate pentahydrate (-)-Sparteine sulfate pentahydrate 6160-12-9 C15H28N2O4S
(R)-(-)-1-[(S)-2-(DI(3,5-BIS-TRIFLUOROMETHYLPHENYL)PHOSPHINO)FERROCENYL]ETHYLDICYCLOHEXYLPHOSPHINE (R)-(-)-1-[(S)-2-(DI(3,5-BIS-TRIFLUOROMETHYLPHENYL)PHOSPHINO)FERROCENYL]ETHYLDICYCLOHEXYLPHOSPHINE 292638-88-1 C40H40F12FeP210*
2-Morpholinoethyl isocyanide 2-Morpholinoethyl isocyanide 78375-48-1 C7H12N2O
1-(TRIFLUOROMETHYL)VINYL ACETATE 1-(TRIFLUOROMETHYL)VINYL ACETATE 2247-91-8 C5H5F3O2
PENICILLIC ACID PENICILLIC ACID 90-65-3 C8H10O4
CHLOROSULFONYLACETYL CHLORIDE CHLOROSULFONYLACETYL CHLORIDE 4025-77-8 C2H2Cl2O3S
3-METHACRYLOXYPROPYLPENTAMETHYLDISILOXANE 3-METHACRYLOXYPROPYLPENTAMETHYLDISILOXANE 18151-85-4 C12H26O3Si2
(METHACRYLOXYMETHYL)DIMETHYLETHOXYSILANE (METHACRYLOXYMETHYL)DIMETHYLETHOXYSILANE 5577-70-8 C9H18O3Si
2,4-DIMETHYL-1,3-PENTADIENE 2,4-DIMETHYL-1,3-PENTADIENE 1000-86-8 C7H12
1-(3-BROMOPROPOXY)-3-METHYLBENZENE 1-(3-BROMOPROPOXY)-3-METHYLBENZENE 6291-74-3 C10H13BrO
PARAFFIN PARAFFIN 8020-83-5 NULL
DIETHYL SULFONE DIETHYL SULFONE 597-35-3 C4H10O2S
3-METHYL-2-NITROBENZYL ALCOHOL 3-METHYL-2-NITROBENZYL ALCOHOL 80866-76-8 C8H9NO3
1,7-PHENANTHROLINE 1,7-PHENANTHROLINE 230-46-6 C12H8N2
FLAVANONE DIACETYL HYDRAZONE FLAVANONE DIACETYL HYDRAZONE C19H18N2O3
3-Amino-N,N-dimethyl-4-nitroaniline 3-Amino-N,N-dimethyl-4-nitroaniline 2069-71-8 C20H29FO3
AMMONIUM TRIFLUOROMETHANESULFONATE AMMONIUM TRIFLUOROMETHANESULFONATE 38542-94-8 CH4F3NO3S
2,4-DIMETHYLSTYRENE 2,4-DIMETHYLSTYRENE 2234-20-0 C10H12
ALLYLDICHLOROSILANE ALLYLDICHLOROSILANE 3937-28-8 C3H6Cl2Si
PYRIMIDIN-4-YLBORONIC ACID PYRIMIDIN-4-YLBORONIC ACID 852362-24-4 C4H5BN2O2
BIS(2-HYDROXYETHYL)DIMETHYLAMMONIUM CHLORIDE BIS(2-HYDROXYETHYL)DIMETHYLAMMONIUM CHLORIDE 38402-02-7 C6H16ClNO2
2-BUTYNAL DIETHYL ACETAL 2-BUTYNAL DIETHYL ACETAL 2806-97-5 C8H14O2
N,N,N',N'-TETRAETHYL-1,3-PROPANEDIAMINE N,N,N',N'-TETRAETHYL-1,3-PROPANEDIAMINE 60558-96-5 C11H26N2
4-((N,N-DIMETHYLAMINO)METHYL)PHENYLBORONIC ACID PINACOL ESTER HYDROCHLORIDE 4-((N,N-DIMETHYLAMINO)METHYL)PHENYLBORONIC ACID PINACOL ESTER HYDROCHLORIDE 878197-87-6 C15H24BNO2
2-METHYLANTHRACENE 2-METHYLANTHRACENE 613-12-7 C15H12
BIS(P-NITROPHENYL) AZIDOPHOSPHONATE BIS(P-NITROPHENYL) AZIDOPHOSPHONATE 51250-91-0 C12H8N5O7P
6-CHLORO-3-FORMYLCHROMONE 6-CHLORO-3-FORMYLCHROMONE 42248-31-7 C10H5ClO3
2-CHLORO-6-METHYLPHENYL ISOCYANATE 2-CHLORO-6-METHYLPHENYL ISOCYANATE 40398-01-4 C8H6ClNO
2,5-DICHLOROPHENYL ISOTHIOCYANATE 2,5-DICHLOROPHENYL ISOTHIOCYANATE 3386-42-3 C7H3Cl2NS
METHYL VINYL ETHER/MALEIC ACID COPOLYMER METHYL VINYL ETHER/MALEIC ACID COPOLYMER 25153-40-6 C7H10O5
2-BROMOPHENYLACETYL CHLORIDE 2-BROMOPHENYLACETYL CHLORIDE 55116-09-1 C8H6BrClO
1-METHYL-3-OCTYLIMIDAZOLIUM TRIFLUOROMET 1-METHYL-3-OCTYLIMIDAZOLIUM TRIFLUOROMET 403842-84-2 C13H23F3N2O3S
(-)-PERILLIC ACID (-)-PERILLIC ACID 23635-14-5 C10H14O2
(3AS)-4-BROMO-3A 5A 6A 6B-TETRAHYDRO-2 (3AS)-4-BROMO-3A 5A 6A 6B-TETRAHYDRO-2 130669-74-8 C9H11BrO3
2-CHLORO-5-HYDROXYBENZENEBORONIC ACID 98 2-CHLORO-5-HYDROXYBENZENEBORONIC ACID 98 913835-71-9 C6H6BClO3
2-NAPHTHYL SULFATE, POTASSIUM SALT, 99 2-NAPHTHYL SULFATE, POTASSIUM SALT, 99 21409-32-5 C10H7KO3S
1,3-DIISOPROPOXYCALIX[4!ARENECROWN-6, 97 1,3-DIISOPROPOXYCALIX[4!ARENECROWN-6, 97 161282-96-8 C44H54O8
(3AR)-3A 5A 6A 6B-TETRAHYDRO-2 2-DI- (3AR)-3A 5A 6A 6B-TETRAHYDRO-2 2-DI- 145107-27-3 C9H12O3
FENTHION-OXON-SULFONE FENTHION-OXON-SULFONE 14086-35-2 C10H15O6PS
ETHYL 2,4-DIOXOHEPTANOATE ETHYL 2,4-DIOXOHEPTANOATE 36983-31-0 C9H14O4
3-METHYLCYCLOPENTANOL 3-METHYLCYCLOPENTANOL 18729-48-1 C6H12O
Tetramethylammonium hydrogen sulfate Tetramethylammonium hydrogen sulfate 103812-00-6 C4H13NO4S
3-OCTYLHEPTAMETHYLTRISILOXANE 3-OCTYLHEPTAMETHYLTRISILOXANE 17955-88-3 C15H38O2Si3
4-ALLYL-2,6-DIMETHOXYPHENOL 4-ALLYL-2,6-DIMETHOXYPHENOL 6627-88-9 C11H14O3
2-AMINO-6-METHYL-PYRIMIDINE-4-THIOL 2-AMINO-6-METHYL-PYRIMIDINE-4-THIOL C5H7N3S
DIHYDRO CUMINYL ALCOHOL DIHYDRO CUMINYL ALCOHOL 536-59-4 C10H16O
2-ETHOXYPHENYL ISOTHIOCYANATE 2-ETHOXYPHENYL ISOTHIOCYANATE 23163-84-0 C9H9NOS
1,3-DIPHENYL-1,1,3,3-TETRAKIS(DIMETHYLSILOXY)DISILOXANE 1,3-DIPHENYL-1,1,3,3-TETRAKIS(DIMETHYLSILOXY)DISILOXANE 66817-59-2 C20H38O5Si6
(R)-1-Phenylethylhydroxylamine (R)-1-Phenylethylhydroxylamine 67377-55-3 C8H11NO
2,2'-AZOBIS[2-(2-IMIDAZOLIN-2-YL)PROPANE] 2,2'-AZOBIS[2-(2-IMIDAZOLIN-2-YL)PROPANE] 20858-12-2 C12H22N6
CYCLOHEPTEN-1-YLBORONIC ACID CYCLOHEPTEN-1-YLBORONIC ACID 835882-35-4 C7H13BO2
1-CHLORO-2-METHYLPROPYL CHLOROFORMATE 1-CHLORO-2-METHYLPROPYL CHLOROFORMATE 92600-11-8 C5H8Cl2O2
2,3,4,5,6-PENTAMETHYLBENZYL ALCOHOL 2,3,4,5,6-PENTAMETHYLBENZYL ALCOHOL 484-66-2 C12H18O
N-(2-CHLOROETHYL)BENZAMIDE N-(2-CHLOROETHYL)BENZAMIDE 26385-07-9 C9H10ClNO
HomePage | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase
Copyright © 2016 ChemicalBook All rights reserved.
郑州市| 安图县| 高唐县| 奉贤区| 赤城县| 虞城县| 肥城市| 建始县| 怀仁县| 怀安县| 灵丘县| 大田县| 汾阳市| 呼伦贝尔市| 灵台县| 馆陶县| 宜兰县| 大理市| 沁阳市| 巴林右旗| 佳木斯市| 贡嘎县| 屏南县| 闽清县| 读书| 开阳县| 江陵县| 南开区| 陆川县| 泽州县| 芦山县| 勃利县| 靖边县| 河曲县| 绥宁县| 清涧县| 青铜峡市| 定南县| 花莲县| 亳州市| 来宾市|