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
HEXAKIS(BENZYLTHIO)BENZENE HEXAKIS(BENZYLTHIO)BENZENE 127022-77-9 C48H42S6
16-MERCAPTOHEXADECANOIC ACID 16-MERCAPTOHEXADECANOIC ACID 69839-68-5 C16H32O2S
rac Ibuprofen-d3 rac Ibuprofen-d3 121662-14-4 C13H15D3O2
2,2'-DIMETHOXYBIPHENYL 2,2'-DIMETHOXYBIPHENYL 4877-93-4 C14H14O2
DIISOPROPYLCYANAMIDE DIISOPROPYLCYANAMIDE 3085-76-5 C7H14N2
BENZYL TRISULFIDE BENZYL TRISULFIDE 6493-73-8 C14H14S3
1,4-DIMETHOXYNAPHTHALENE 1,4-DIMETHOXYNAPHTHALENE 10075-62-4 C12H12O2
2,3-DIHYDRO-1,4-BENZODIOXIN-6-YL ISOTHIOCYANATE 2,3-DIHYDRO-1,4-BENZODIOXIN-6-YL ISOTHIOCYANATE 141492-50-4 C9H7NO2S
1-Phenyl-1-[4-(1-piperidinyl)phenyl]-2-propyn-1-ol, 97% 1-Phenyl-1-[4-(1-piperidinyl)phenyl]-2-propyn-1-ol, 97% 214746-69-7 C20H21NO
benzofuran-4-yl trifluoromethanesulfonate benzofuran-4-yl trifluoromethanesulfonate 177734-79-1 C9H5F3O4S
2,4-Dinitrobenzenesulfonic acid hydrate 2,4-Dinitrobenzenesulfonic acid hydrate 698999-22-3 C6H6N2O8S
Heptakis-O-(4-sulfobutyl)-beta-Cyclodextrin Heptakis-O-(4-sulfobutyl)-beta-Cyclodextrin 165133-56-2 C46H80O39S
2-octyloxyphenylboronicacid 2-octyloxyphenylboronicacid 1311163-98-0 C14H23BO3
(+/-)-COTININE-D3 (+/-)-COTININE-D3 66269-66-7 C10H9D3N2O
4,4μ-Dimercaptostilbene 4,4μ-Dimercaptostilbene 614756-39-7 C14H12S2
N,Nμ,Nμμ-Tri-Boc-guanidine N,Nμ,Nμμ-Tri-Boc-guanidine 216584-22-4 C16H29N3O6
(9-Butyl-9-fluorenyl)dicyclohexylphosphine  tetrafluoroborate,  cataCXium(R)  FBu (9-Butyl-9-fluorenyl)dicyclohexylphosphine tetrafluoroborate, cataCXium(R) FBu 1007311-98-9 C29H40BF4P
ETHYL-4-(TRIETHOXYSILYL) BENZOATE ETHYL-4-(TRIETHOXYSILYL) BENZOATE 197662-64-9 C15H24O5Si
1-(3-BROMOPROPOXY)-4-METHYLBENZENE 1-(3-BROMOPROPOXY)-4-METHYLBENZENE 16929-24-1 C10H13BrO
METHYL-(3-PENTYL)-AMINE HCL METHYL-(3-PENTYL)-AMINE HCL 130985-81-8 C6H16ClN
(S)-(+)-1-Iodo-2-methylbutane (S)-(+)-1-Iodo-2-methylbutane 29394-58-9 C5H11I
p-benzoquinone 1-benzoylhydrazon-4-oxime p-benzoquinone 1-benzoylhydrazon-4-oxime 495-73-8 C13H11N3O2
glucosulfone glucosulfone 554-18-7 C24H34N2O18S3.2Na
nidroxyzone nidroxyzone 405-22-1 C8H10N4O5
4-methyl-2-oxo-2H-1-benzopyran-7-yl alpha-L-ido-pyranosiduronic acid 4-methyl-2-oxo-2H-1-benzopyran-7-yl alpha-L-ido-pyranosiduronic acid 66966-09-4 C16H16O9
Spermidine bydrochloride Spermidine bydrochloride
6,6-Dibromopenicillanic acid sulphone 6,6-Dibromopenicillanic acid sulphone C8H9Br2NO5S
4-BROMOBENZYL METHYL ETHER 4-BROMOBENZYL METHYL ETHER 1515-88-4 C8H9BrO
Bis(4-methoxyphenyl) sulfoxide Bis(4-methoxyphenyl) sulfoxide 1774-36-3 C14H14O3S
4-CHLOROCINNAMIC ACID 4-CHLOROCINNAMIC ACID 940-62-5 C9H7ClO2
Nifursemizone Nifursemizone 5579-89-5 C8H10N4O4
1-Piperazinecarboximidamide,4-methyl-(9CI) 1-Piperazinecarboximidamide,4-methyl-(9CI) 45798-01-4 C6H14N4
Pentosan Sulfuric Polyester Pentosan Sulfuric Polyester 37300-21-3 C10H18O21S4
[3-(MERCAPTOMETHYL)-2,4,6-TRIMETHYLPHENYL]METHANETHIOL [3-(MERCAPTOMETHYL)-2,4,6-TRIMETHYLPHENYL]METHANETHIOL 10074-13-2 C11H16S2
H-HIS(BZL)-OME 2 HCL H-HIS(BZL)-OME 2 HCL C14H19Cl2N3O2
3,7,4'-TRIHYDROXYFLAVONE 3,7,4'-TRIHYDROXYFLAVONE 2034-65-3 C15H10O5
4-(Acetonitrile)phenylboronicacid 4-(Acetonitrile)phenylboronicacid
2-PHENOXYPHENYL ISOCYANATE 2-PHENOXYPHENYL ISOCYANATE 59377-20-7 C13H9NO2
6-[(2-phenylhydrazinyl)methylidene]cyclohexa-2,4-dien-1-one 6-[(2-phenylhydrazinyl)methylidene]cyclohexa-2,4-dien-1-one 614-65-3 C13H12N2O
6-bromonaphthalene-2-carbaldehyde 6-bromonaphthalene-2-carbaldehyde 170737-46-9 C11H7BrO
(4S)-4-[(1R)-2-AZIDO-1-(BENZYLOXY)ETHYL]-2,2-DIMETHYL-1,3-DIOXOLANE (4S)-4-[(1R)-2-AZIDO-1-(BENZYLOXY)ETHYL]-2,2-DIMETHYL-1,3-DIOXOLANE 1228077-93-7 C14H19N3O3
SULPROFOS SULFONE SULPROFOS SULFONE 58877-92-2 C12H19O4PS3
CORTISOL-9,11,12,12-D4 CORTISOL-9,11,12,12-D4 73565-87-4 C21H26D4O5
(+)-3-METHYLHEXANEDIOIC ACID (+)-3-METHYLHEXANEDIOIC ACID 623-82-5 C7H12O4
4-(4-BROMOPHENYL)-5-METHYL-2(3H)-THIAZOLONE HYDRAZONE 4-(4-BROMOPHENYL)-5-METHYL-2(3H)-THIAZOLONE HYDRAZONE 886494-27-5 C10H10BrN3S
1-(5-Bromo-2-pyridyl)-2-thiourea 1-(5-Bromo-2-pyridyl)-2-thiourea 31430-38-3 C6H6BrN3S
17-Azido-3,6,9,12,15-pentaoxaheptadecan-1-amine 17-Azido-3,6,9,12,15-pentaoxaheptadecan-1-amine 516493-93-9 C12H26N4O5
Aripiprazole-d8 (Butyl-d8) Aripiprazole-d8 (Butyl-d8) 1089115-04-7 C23H19Cl2D8N3O2
NULL NULL 101051-09-6
4-(S-Methylsulfonimidoyl)phenol 4-(S-Methylsulfonimidoyl)phenol 35543-41-0 C7H9NO2S
Fluid Tetrathionnate Medium Fluid Tetrathionnate Medium
TERT-BUTYLBORONIC ACID TERT-BUTYLBORONIC ACID 86253-12-5 C4H11BO2
4-Methylcatecholdimethylacetate 4-Methylcatecholdimethylacetate 52589-39-6 C13H16O6
o-Mesitylenesulfonyl HydroxylaMine o-Mesitylenesulfonyl HydroxylaMine 58042-39-0 C9H13NO3S
4-NITROPHENYL IODOACETATE 4-NITROPHENYL IODOACETATE 31252-85-4 C8H6INO4
N-DECANE-D22 N-DECANE-D22 16416-29-8 C10D22
1-ETHYL-3-METHYLIMIDAZOLIUM NITRATE 1-ETHYL-3-METHYLIMIDAZOLIUM NITRATE 143314-14-1 C6H11N3O3
1-(3-FLUOROPHENYL)BIGUANIDE HYDROCHLORIDE 1-(3-FLUOROPHENYL)BIGUANIDE HYDROCHLORIDE 2267-49-4 C8H11ClFN5
PERINAPHTHENONE PERINAPHTHENONE 548-39-0 C13H8O
3-AMINOBENZENESULFONYL FLUORIDE HYDROCHLORIDE 3-AMINOBENZENESULFONYL FLUORIDE HYDROCHLORIDE 3887-48-7 C6H7ClFNO2S
PYRIDINE-D5 N-OXIDE PYRIDINE-D5 N-OXIDE 19639-76-0 C5D5NO
1,8-DIMETHYLNAPHTHALENE 1,8-DIMETHYLNAPHTHALENE 569-41-5 C12H12
3,4-DIMETHOXYPHENYLHYDRAZINE HYDROCHLORIDE 3,4-DIMETHOXYPHENYLHYDRAZINE HYDROCHLORIDE 40119-17-3 C8H13ClN2O2
HYDROXY TOLBUTAMIDE-D9 HYDROXY TOLBUTAMIDE-D9 1185112-19-9 C12H9D9N2O4S
3-AMINOPHENYLBORONIC ACID 3-AMINOPHENYLBORONIC ACID 280563-63-5 C6H8BNO2
ISOCYANOBENZENE ISOCYANOBENZENE 931-54-4 C7H5N
CEMBRENE CEMBRENE 1898-13-1 C20H32
(5-METHOXY-2-NITRO-PHENYL)-ACETIC ACID (5-METHOXY-2-NITRO-PHENYL)-ACETIC ACID 20876-29-3 C9H9NO5
TRANS-2-HEXEN-1-OL TRANS-2-HEXEN-1-OL 2305-21-7 C6H12O
Butyl 3-mercaptopropionate Butyl 3-mercaptopropionate 16215-21-7 C7H14O2S
3-(4-CHLORO-PHENYL)-PROPIONALDEHYDE 3-(4-CHLORO-PHENYL)-PROPIONALDEHYDE 75677-02-0 C9H9ClO
(2-ISOCYANOETHYL)BENZENE (2-ISOCYANOETHYL)BENZENE 59795-89-0 C9H9N
DL-GLYCERIC ACID DL-GLYCERIC ACID 600-19-1 C3H6O4
(2 6-DIFLUOROPHENYL)THIOUREA  97 (2 6-DIFLUOROPHENYL)THIOUREA 97 59772-31-5 C7H6F2N2S
SALICYLALDEHYDE THIOSEMICARBAZONE  95 SALICYLALDEHYDE THIOSEMICARBAZONE 95 5351-90-6 C8H9N3OS
(S)-1-{(S)-2-[2-[DI(3,5-XYLYL)PHOSPHINO]PHENYL]FERROCENYL}ETHYLDI(3,5-XYLYL)PHOS (S)-1-{(S)-2-[2-[DI(3,5-XYLYL)PHOSPHINO]PHENYL]FERROCENYL}ETHYLDI(3,5-XYLYL)PHOS 849925-24-2 C45H47P2.C5H5.Fe
(S)-1-{(R)-2-[BIS[4-(TRIFLUOROMETHYL)PHENYL]PHOSPHINO]FERROCENYL}-ETHYLDI-TERT.- (S)-1-{(R)-2-[BIS[4-(TRIFLUOROMETHYL)PHENYL]PHOSPHINO]FERROCENYL}-ETHYLDI-TERT.- 849924-37-4 C36H44F6FeP2
(S)-1-{(R)-2-[DI(2-FURYL)PHOSPHINO]FERROCENYL}ETHYLDI-TERT.-BUTYLPHOSPHINE (S)-1-{(R)-2-[DI(2-FURYL)PHOSPHINO]FERROCENYL}ETHYLDI-TERT.-BUTYLPHOSPHINE 849924-42-1 C23H31O2P2.C5H5.Fe
4-BROMO-2-CHLOROPHENYL ISOCYANATE 4-BROMO-2-CHLOROPHENYL ISOCYANATE 190774-47-1 C7H3BrClNO
1,3-DIOCTYLOXYCALIX[4!ARENECROWN-6, 97 1,3-DIOCTYLOXYCALIX[4!ARENECROWN-6, 97 161282-97-9 C54H74O8
2,5-DIHYDROXY-1,3-BENZENEDISULFONIC ACID DIPOTASSIUM SALT, TECH., 70 2,5-DIHYDROXY-1,3-BENZENEDISULFONIC ACID DIPOTASSIUM SALT, TECH., 70 51579-80-7 C6H4K2O8S2
1-BUTYL-2,3-DIMETHYLIMIDAZOLIUM BROMIDE 1-BUTYL-2,3-DIMETHYLIMIDAZOLIUM BROMIDE 475575-45-2 C9H17BrN2
2-(4-CHLOROPHENYL)MALONDIALDEHYDE, 95 2-(4-CHLOROPHENYL)MALONDIALDEHYDE, 95 205676-17-1 C9H7ClO2
2-MESITYLENESULFONIC ACID DIHYDRATE, 97 2-MESITYLENESULFONIC ACID DIHYDRATE, 97 835617-36-2 C9H12O3S.2H2O
2-METHOXYPHENYLBORONIC AICD 2-METHOXYPHENYLBORONIC AICD C7H9BO3
FORMAMIDINE DISULFIDE FORMAMIDINE DISULFIDE C2H6N4S2
1-HEXYL-2,3-DIMETHYLIMIDAZOLIUM HEXAFLUOROPHOSPHATE 1-HEXYL-2,3-DIMETHYLIMIDAZOLIUM HEXAFLUOROPHOSPHATE 653601-27-5 C11H21F6N2P
2-AMINO-6-METHYLPYRIMIDINE-4-CARBOXAMIDINE 2-AMINO-6-METHYLPYRIMIDINE-4-CARBOXAMIDINE 1116339-75-3 C6H9N5
(R)-(+)-1,2-EPOXYOCTANE (R)-(+)-1,2-EPOXYOCTANE 77495-66-0 C8H16O
1,4-DIAMINONAPHTHALENE 1,4-DIAMINONAPHTHALENE 2243-61-0 C10H10N2
3-(4-METHOXYPHENYL)PROPIONYL CHLORIDE 3-(4-METHOXYPHENYL)PROPIONYL CHLORIDE 15893-42-2 C10H11ClO2
FEMA 3766 FEMA 3766 17587-33-6 C9H14O
4-(TRIFLUOROMETHYLSULPHINYL)NITROBENZENE 4-(TRIFLUOROMETHYLSULPHINYL)NITROBENZENE 394-60-5 C7H4F3NO3S
4-HYDROXY BENZYLIDENE MALONIC ACID DIMETHYL ESTER 4-HYDROXY BENZYLIDENE MALONIC ACID DIMETHYL ESTER 51947-45-6 C12H12O5
Selenophene-2-boronic acid Selenophene-2-boronic acid 35133-86-9 C4H5BO2Se
DI-N-OCTYL PHTHALATE (RING-D4) DI-N-OCTYL PHTHALATE (RING-D4) 93952-13-7 C24H34D4O4
Melamine-D6 Melamine-D6 13550-89-5 C3D6N6
octane-1,2-dithiol octane-1,2-dithiol C8H18S2
tetradecyl marcaptan tetradecyl marcaptan C14H30S
Anthraquinone-2,6-di Anthraquinone-2,6-di
HomePage | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase
Copyright © 2016 ChemicalBook All rights reserved.