As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch
Cas:2045-00-3
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
inquiryhe company has advanced technology, as well as a large number of excellent R & D team, to provide customers from the grams to one hundred kilograms and tons of high-quality products, competitive prices and quality se T rvice Appearance:White or
Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block
Cas:2045-00-3
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
inquiryHangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det
Cas:2045-00-3
Min.Order:0 Metric Ton
Negotiable
Type:Lab/Research institutions
inquiryJ&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia
Cas:2045-00-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryProduct Description Description & Specification Category Pharmaceutical Raw Materials, Fine Chemicals, Bulk drug Standard Medical standard
Cas:2045-00-3
Min.Order:1 Kilogram
FOB Price: $112.0
Type:Trading Company
inquirybest price high quality Storage:Room Temperature Application:For pharmacy chemical Transportation:by sea,air
Cas:2045-00-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry2-Aminobenzenearsonic acid cas 2045-00-3Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
stock,low price,high quality,high purity,good sevice Application:R&D
Cas:2045-00-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryWe supply1.in very competitive price; 2.Quality Guaranteed; 3.Fast Delivery; 4.credit support Application:APIs and Chemical Intermediates
intermediateAppearance:liquid Storage:Normal temperature Package:1kg/25kg/customized Application:intermediate Transportation:By Ship/Air
intermediateAppearance:liquid Storage:Normal temperature Package:1kg/25kg/customized Application:intermediate Transportation:By Ship/Air Port:any port of china
Hangzhou Keying Chem Co., Ltd. Is a comprehensive enterprise, dedicated to the development, production and marketing of chemicals. As a technology innovative and service professional enterprise, Our company mainly engages in global pharmaceutical, ch
Cas:2045-00-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryDebyesci is here who supplied several kinds of chemical products to global pharmaceutical, drug discovery, agrochemical and biotechnology industries for four yearsOur key scientific leadership team has gained experience in top research and developmen
CFTC?PharmaChem?is?a?service?based?company?in?China,?a?pharmachem?division?of?Changzhou?Foreign?Trade?Corp.,supplying?raw?materials,?intermediates,?APIs?and?fine?chemicals?for?the?pharmaceutical?and?specialty?chemical?industries?worldwide. Applicatio
YUYONGMEI was established in Aug,1999, located in the industrial park of Nanjing University of Technology, It is a private enterprises in Jiangsu Province with 1200 square meters’ R&D center. Our R&D center has a well-equipped synthetic laboratory a
Best quality & Attractive price & Professional service; Trial & Pilot & CommercialHenan Fine Chemicals Co., LTD. is a diversified technology - oriented integrated company, which mainly concentrates on fine chemicals. Our company is committed to becom
high purity Application:Drug intermediates Materials intermediates and active molecules
Conditions | Yield |
---|---|
With platinum Electrolysis; |
Conditions | Yield |
---|---|
Reduktion an einer Platinkathode.Electrolysis; |
Conditions | Yield |
---|---|
With iron(II) chloride in kalter alkalischer Loesung; | |
With water; iron; iron(II) chloride at 60 - 70℃; | |
With methanol; sodium amalgam at 55 - 60℃; |
N,N'-bis-(2-arsono-phenyl)-oxalamide
o-arsanilic acid
Conditions | Yield |
---|---|
With sulfuric acid |
o-arsanilic acid
Conditions | Yield |
---|---|
With ethanol; nickel at 50 - 90℃; under 69137.7 Torr; Hydrogenation; |
o-chlorophenylarsonic acid
A
o-arsanilic acid
Conditions | Yield |
---|---|
With pentan-1-ol; copper diacetate; potassium carbonate at 135℃; |
2-Nitrophenyldiazonium
o-arsanilic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: alkali; sodium arsenite 2: NaOH-solution; ferrosulfate View Scheme | |
Multi-step reaction with 2 steps 1: sodium arsenite 2: iron; iron (II)-chloride; water / 60 - 70 °C View Scheme | |
Multi-step reaction with 2 steps 1: sodium arsenite 2: sodium amalgam (4 percent ); methanol / 55 - 60 °C View Scheme | |
Multi-step reaction with 2 steps 1: sodium arsenite 2: iron (II)-chloride / in kalter alkalischer Loesung View Scheme |
Conditions | Yield |
---|---|
In ethanol at 4℃; for 2h; | 90% |
4-Chloro-2-methylthiopyrimidine
o-arsanilic acid
Conditions | Yield |
---|---|
With hydrogenchloride In isopropyl alcohol Heating; | 86% |
With hydrogenchloride In isopropyl alcohol Heating; | 86.4% |
for 24h; Heating; |
o-arsanilic acid
6,7-dimethoxy-4-chloroquinazoline
Conditions | Yield |
---|---|
With hydrogenchloride In isopropyl alcohol Heating; | 83.2% |
for 24h; Heating; | |
With hydrogenchloride In isopropyl alcohol Heating; |
Conditions | Yield |
---|---|
With hydrogenchloride In isopropyl alcohol Heating; | 73.4% |
for 24h; Heating; | |
With hydrogenchloride In isopropyl alcohol Heating; |
o-arsanilic acid
acetylacetone
(2-(2-(2,4-dioxopentan-3-ylidene)hydrazineyl) phenyl)arsonic acid
Conditions | Yield |
---|---|
Stage #1: o-arsanilic acid With hydrogenchloride; sodium hydroxide; sodium nitrite In water at -0.16℃; Stage #2: acetylacetone In water at -0.16℃; for 1h; | 67% |
o-arsanilic acid
sodium monochloroacetic acid
2-(carboxymethylamino)phenylarsonic acid hydrochloride
Conditions | Yield |
---|---|
Stage #1: o-arsanilic acid; sodium monochloroacetic acid With potassium carbonate In water at 100℃; for 7h; Stage #2: With hydrogenchloride In water pH=2 - 2.5; | 60% |
Conditions | Yield |
---|---|
With hydrogenchloride In ethanol; water at 20℃; for 7h; | 34% |
2,4-dinitrobromobenzene
o-arsanilic acid
[2-(2,4-dinitro-anilino)-phenyl]-arsonic acid
Conditions | Yield |
---|---|
With pentan-1-ol; copper; potassium carbonate |
Conditions | Yield |
---|---|
With hydrogenchloride |
Conditions | Yield |
---|---|
With water |
Conditions | Yield |
---|---|
With sodium hydroxide |
Conditions | Yield |
---|---|
With i-Amyl alcohol; copper; potassium carbonate at 130 - 140℃; Reagens 4:Kupfer(I)-jodid; |
Conditions | Yield |
---|---|
With i-Amyl alcohol; copper; potassium carbonate at 160 - 170℃; Reagens 4: Kupfer(I)-jodid; |
Conditions | Yield |
---|---|
With sodium hydroxide; acetone und Erhitzen des Reaktionsprodukts mit wss. NH3; |
4-bromo-6-methoxy-2-methylquinoline
o-arsanilic acid
[2-(6-methoxy-2-methyl-[4]quinolylamino)-phenyl]-arsonic acid
Conditions | Yield |
---|---|
With pentan-1-ol; copper; potassium carbonate at 130 - 140℃; Reagens 4: Jod; |
1-chloro-5-nitroisoquinoline
o-arsanilic acid
Conditions | Yield |
---|---|
With sodium hydroxide |
Conditions | Yield |
---|---|
With pentan-1-ol; copper; potassium carbonate |
Conditions | Yield |
---|---|
With hydrogenchloride |
Conditions | Yield |
---|---|
With sodium hydroxide |
Conditions | Yield |
---|---|
With sodium hydroxide |
para-bromotoluene
o-arsanilic acid
(2-p-toluidino-phenyl)-arsonic acid
Conditions | Yield |
---|---|
With i-Amyl alcohol; copper; potassium carbonate |
Conditions | Yield |
---|---|
at 130 - 140℃; | |
With i-Amyl alcohol; copper; potassium carbonate at 130 - 140℃; Reagens 4: Kupfer(I)-jodid; |
Conditions | Yield |
---|---|
at 150 - 160℃; | |
With i-Amyl alcohol; copper; potassium carbonate at 150 - 160℃; Reagens 4: Kupfer(I)-jodid; |
m-bromobenzoic acid
o-arsanilic acid
3-(2-arsono-anilino)-benzoic acid
Conditions | Yield |
---|---|
/BRN= 3395862/; |
Conditions | Yield |
---|---|
With i-Amyl alcohol; copper; potassium carbonate at 145 - 155℃; Reagens 4: Kupfer(I)-jodid; |
3-Bromonitrobenzene
o-arsanilic acid
[2-(3-nitro-anilino)-phenyl]-arsonic acid
Conditions | Yield |
---|---|
With i-Amyl alcohol; copper; potassium carbonate at 145 - 150℃; Reagens 4: Kupfer(I)-jodid; |
2-nitrophenyl bromide
o-arsanilic acid
[2-(2-nitro-anilino)-phenyl]-arsonic acid
Conditions | Yield |
---|---|
With i-Amyl alcohol; copper; potassium carbonate at 110℃; Reagens 4: Kupfer(I)-jodid; |
N-(2-hydroxyphenyl)-2-chloroacetamide
o-arsanilic acid
Conditions | Yield |
---|---|
With sodium hydroxide |
2-bromo-3-nitrotoluene
o-arsanilic acid
[2-(2-methyl-6-nitro-anilino)-phenyl]-arsonic acid
Conditions | Yield |
---|---|
With i-Amyl alcohol; copper; potassium carbonate |
4-bromo-2-nitrotoluene
o-arsanilic acid
Conditions | Yield |
---|---|
With i-Amyl alcohol; copper; potassium carbonate |
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