We have been specializing in chemical indicators and dye chemicals for over 30years. Superiority : 1.ISO certificate 2..Powerful R & D team 3.The ability of quantized production,from grams to tons; 4.Various kinds of a
Dayangchem's 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. DayangChem can provide different quantities
Cas:2321-07-5
Min.Order:1 Kilogram
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Type:Lab/Research institutions
inquiryItems Standard Result Assay 98%min ----------------------------------------------------------------------------------------------
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Min.Order:1 Gram
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Type:Manufacturers
inquiryGood quality Fluorescein CAS 2321-07-5 with competitive price Company profile Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical & its intermediates, Food/Feed additiv
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Min.Order:10 Kilogram
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inquiryThe above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi
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Min.Order:1
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Min.Order:1 Gram
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inquiryShanghai Seasonsgreen Chemical is a high-tech research and development, production, sale and custom synthesis set in one high-tech chemical products enterprises. Our sales and marketing division is located in Shanghai, serving international pharmaceu
Cas:2321-07-5
Min.Order:1 Kilogram
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inquiryAbout Product Details
Cas:2321-07-5
Min.Order:1 Kilogram
FOB Price: $1.0 / 5.0
Type:Lab/Research institutions
inquiryAdvantage : LIDE PHARMACEUTICALS LIMITED is a professional chemicals and APIs leading manufacturer in China. Our core business line covers APIs, Intermediates, Herb extract, etc. We are specialized in chemical synthesis, process development of
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inquiryFluorescein Basic information Product Name: Fluorescein Synonyms: 11712yellow;2-(6-hydroxy-3-oxo-3h-xanthen-9-yl)-benzoicaci;3,6-dihydroxyspiro(xanthene-9,3’-
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Min.Order:1 Kilogram
Negotiable
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inquiryWith our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufacturin
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Min.Order:1 Kilogram
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Min.Order:1 Kilogram
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inquiryFluorescein Basic information Product Name: Fluorescein Synonyms: FLUORESCEIN, FREE ACIDFLUORESCEIN, FREE ACIDFLUORESCEIN, FREE ACID;Diresorcinolphthalein;Tetraoxyphthalophenone anhydride;SOLVENT YELLOW 94;S NO 880;RESORCINOL PHTHALEIN;FLUORES
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Min.Order:1 Gram
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Min.Order:1 Gram
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inquiryHello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai
Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod
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Cas:2321-07-5
Min.Order:0 Metric Ton
Negotiable
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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
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inquiryZibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi
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inquiryProduct name: Fluorescein CAS No.:2321-07-5 Molecule Formula:C20H12O5 Molecule Weight:332.31 Purity: 99.0% Package: 25kg/drum Description:Yellow powder Manufacture Standards:Enterprise Standard TESTING ITEMS SPECI
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Min.Order:1 Kilogram
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Cas:2321-07-5
Min.Order:1 Metric Ton
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inquiryHangzhou Huarong Pharm Co., Ltd.established since 2006 , has been actively developing specialty products for Finished Dosages, APIs, Intermediates, and Fine chemicals markets in North America, Europe, Korea, Japan, Mid-East and all over the World. Hu
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SAGECHEM is a chemical R&D, manufacturing and distribution company in China since 2009, including pharmaceutical intermediates, agrochemical, dyestuff intermediates, organosilicone, API and etc. We also offer a full range of services in custom synthe
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high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou
Conditions | Yield |
---|---|
In phosphoric acid for 0.00833333h; Microwave irradiation; | 97% |
With Zn0.95*Ti0.05O In neat (no solvent) at 160℃; for 1.33h; Catalytic behavior; Reagent/catalyst; Temperature; Time; Green chemistry; | 95% |
With citric acid In toluene for 3h; Solvent; Reflux; Large scale; | 94.8% |
Conditions | Yield |
---|---|
Stage #1: fluorescein diacetate With sodium hydroxide In methanol; water for 1.5h; Heating / reflux; Stage #2: With hydrogenchloride In ethanol; water at 20 - 25℃; for 1h; pH=1 - 2.5; | 80% |
With water In acetonitrile pH=4.8; aq. acetate buffer; | |
With porcine liver carboxylesterase In 2-methoxy-ethanol; water at 37℃; for 0.5h; pH=8; Enzymatic reaction; |
Conditions | Yield |
---|---|
With oxygen; nitrogen(II) oxide at 25℃; pH=7.4; Air; aq. HEPES buffer; | 78.3% |
With sodium acetate In chloroform; acetic anhydride; acetic acid |
2-<2,7-Dihydroxy-naphthoyl>-benzoesaeure
recorcinol
A
2,7-Dihydroxynaphthalene
B
fluorescein
Conditions | Yield |
---|---|
With methanesulfonic acid In toluene | A 43% B 20% |
Conditions | Yield |
---|---|
With sulfuric acid |
phthalic anhydride
3,4-pyridinecarboxylic acid
recorcinol
fluorescein
Conditions | Yield |
---|---|
With zinc(II) chloride |
Conditions | Yield |
---|---|
at 180℃; |
Conditions | Yield |
---|---|
at 110 - 117℃; |
phthalic anhydride
2-phenylsuccinic acid
recorcinol
fluorescein
phthalic anhydride
1,2,4,5-benzenetetracarboxylic acid
recorcinol
fluorescein
phthalic anhydride
recorcinol
A
1',6'-dihydroxy-spiro[phthalan-1,9'-xanthen]-3-one
B
fluorescein
Conditions | Yield |
---|---|
With zinc(II) chloride |
phthalic anhydride
recorcinol
A
2-(2,4-dihydroxybenzoyl)benzoic acid
B
fluorescein
Conditions | Yield |
---|---|
at 126℃; | |
at 126℃; |
1,2-naphthalenedicarboxylic anhydride
(E)-3-Ureido-but-2-enoic acid ethyl ester
recorcinol
fluorescein
Conditions | Yield |
---|---|
beim Erhitzen ueber den Schmelzpunkt; | |
beim Erhitzen ueber den Schmelzpunkt; |
Conditions | Yield |
---|---|
at 180 - 200℃; |
(E)-3-Ureido-but-2-enoic acid ethyl ester
recorcinol
fluorescein
3,3-bis-(3,4-dihydroxy-phenyl)-3H-isobenzofuran-1-one
recorcinol
fluorescein
Conditions | Yield |
---|---|
at 210 - 220℃; |
Conditions | Yield |
---|---|
With manganese(IV) oxide; sulfuric acid at 160℃; |
Conditions | Yield |
---|---|
With manganese(IV) oxide; sulfuric acid at 160℃; |
Conditions | Yield |
---|---|
With manganese(IV) oxide; sulfuric acid at 160℃; |
Conditions | Yield |
---|---|
at 180 - 200℃; |
Conditions | Yield |
---|---|
In 1,4-dioxane Equilibrium constant; Investigation of the effect of various organic solvents.; |
fluorescein mono-p-guanidinobenzoate hydrochloride
fluorescein
Conditions | Yield |
---|---|
With sodium hydrogencarbonate In various solvent(s) Rate constant; Ambient temperature; pH 10.15, other pH, spontaneous hydrolysis; microscopic and macroscopic kinetic constants for the hydrolysis by tripsin; serine proteases hydrolysis, active-site titrations of serine proteases; |
6'-hydroxy-3-oxospiro-3'-yl β-D-glucopyranosiduronic acid
fluorescein
Conditions | Yield |
---|---|
With acetate buffer; calf liver β-glucuronidase at 37℃; for 2h; | |
With acetate buffer; calf liver β-glucuronidase at 37℃; for 2h; pH 4.5; |
Conditions | Yield |
---|---|
With sodium hydroxide In water for 1h; Reflux; Inert atmosphere; | 100% |
With potassium hydroxide In water for 5h; Heating; | 86% |
With sodium hydroxide at 160℃; for 1h; | 74.1% |
fluorescein
eosin y
Conditions | Yield |
---|---|
With Oxone; sodium bromide at 200℃; for 12h; | 100% |
With sodium hypochlorite; hydrogen bromide; sodium sulfite In 2-methyltetrahydrofuran; water at 20℃; for 3h; Flow reactor; | 78% |
With ethanol; bromine |
fluorescein
methyl iodide
2-(6'-methoxy-3'-oxo-3'H-xanthene-9'-yl)-benzoic acid methyl ester
Conditions | Yield |
---|---|
Stage #1: fluorescein With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 1h; Inert atmosphere; Stage #2: methyl iodide In N,N-dimethyl-formamide at 20℃; for 12h; Inert atmosphere; | 100% |
In N,N-dimethyl-formamide at 20℃; for 6h; | 11% |
Stage #1: fluorescein With sodium hydroxide In methanol Stage #2: methyl iodide In N,N-dimethyl-formamide | |
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 18h; |
Conditions | Yield |
---|---|
With sulfuric acid for 14h; Reflux; Molecular sieve; | 98% |
With sulfuric acid for 16h; Reflux; |
Conditions | Yield |
---|---|
With copper diacetate In pyridine; dichloromethane at 20℃; for 120h; | 98% |
fluorescein
2-amino-3′,6′-dihydroxyspiro[isoindoline-1,9′-xanthen]-3-one
Conditions | Yield |
---|---|
With hydrazine hydrate In ethanol at 80℃; for 12h; | 97% |
With hydrazine hydrate In methanol for 12h; Reflux; | 96% |
With hydrazine hydrate In ethanol at 80℃; for 6h; | 93% |
Conditions | Yield |
---|---|
With phosphorus pentoxide at 60℃; for 4h; solid phase reaction; | 95% |
Conditions | Yield |
---|---|
With dicyclohexyl-carbodiimide In dichloromethane at 60℃; for 48h; | 95% |
methanol
fluorescein
methyl 2-(6-hydroxy-3-oxo-3H-xanthen-9-yl)benzoate
Conditions | Yield |
---|---|
With sulfuric acid for 12h; Reflux; | 94% |
With sulfuric acid for 4h; Reflux; | 91% |
With hydrogenchloride |
Conditions | Yield |
---|---|
With phosphorus pentoxide at 60℃; for 2h; solid phase reaction; | 94% |
Conditions | Yield |
---|---|
With dicyclohexyl-carbodiimide In dichloromethane at 60℃; for 20h; | 94% |
Conditions | Yield |
---|---|
Stage #1: fluorescein With triethylamine In dichloromethane at 0℃; for 0.25h; Stage #2: 2-fluoro-5-nitrobenzoyl chloride In dichloromethane at 0℃; for 1h; | 94% |
Stage #1: fluorescein With triethylamine In dichloromethane at 0℃; for 0.333333h; Stage #2: 2-fluoro-5-nitrobenzoyl chloride In dichloromethane at 0 - 20℃; for 24h; | 43% |
Conditions | Yield |
---|---|
With triethylamine In dichloromethane | 93.8% |
Conditions | Yield |
---|---|
With dmap; triethylamine In toluene at 20℃; for 24h; Inert atmosphere; | 93% |
With dmap; triethylamine In toluene for 24h; Inert atmosphere; | 60% |
at 140℃; | |
With sodium hydroxide |
Conditions | Yield |
---|---|
With phosphorus pentoxide at 60℃; for 4h; solid phase reaction; | 93% |
ortho-chlorobenzoic acid
fluorescein
fluorescein bis(2-chlorobenzoate)
Conditions | Yield |
---|---|
With phosphorus pentoxide at 60℃; for 4h; solid phase reaction; | 93% |
Conditions | Yield |
---|---|
With pyridine In dichloromethane at 20℃; for 5h; | 93% |
Conditions | Yield |
---|---|
With dicyclohexyl-carbodiimide In dichloromethane at 60℃; for 48h; | 93% |
4-Nitrophthalonitrile
fluorescein
Conditions | Yield |
---|---|
With sodium acetate In N,N-dimethyl-formamide at 20 - 80℃; for 6h; Reagent/catalyst; Solvent; Temperature; Inert atmosphere; | 93% |
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 72h; Inert atmosphere; | 80% |
Conditions | Yield |
---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane at 20℃; for 1.5h; Cooling; | 93% |
fluorescein
Conditions | Yield |
---|---|
Stage #1: fluorescein In water at 20℃; for 0.166667h; Sonication; Stage #2: With barium hydroxide octahydrate In water at 20℃; for 6h; | 93% |
Conditions | Yield |
---|---|
With phosphorus pentoxide at 60℃; for 1h; solid phase reaction; | 92% |
Conditions | Yield |
---|---|
With dicyclohexyl-carbodiimide In dichloromethane at 60℃; for 36h; | 92% |
Conditions | Yield |
---|---|
With dicyclohexyl-carbodiimide In dichloromethane at 60℃; for 48h; | 92% |
dimethyl sulfate
fluorescein
3′,6′-dimethoxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one
Conditions | Yield |
---|---|
Stage #1: fluorescein With potassium carbonate In acetone for 0.5h; Stage #2: dimethyl sulfate In acetone at 50℃; for 4h; | 92% |
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran at 20℃; for 2.5h; | 91% |
for 3 - 5h; Heating / reflux; | 75% |
Reflux; | 72.6% |
allyl bromide
fluorescein
allyl 2-(6-(allyloxy)-3-oxo-3H-xanthen-9-yl)benzoate
Conditions | Yield |
---|---|
With caesium carbonate In N,N-dimethyl-formamide at 60℃; | 91% |
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran at 0 - 20℃; for 2.16667h; | 91% |
Conditions | Yield |
---|---|
With sulfolane; thionyl chloride In N,N-dimethyl-formamide at 60 - 80℃; for 2.5h; Temperature; | 90.5% |
With phosphorus pentachloride at 100℃; | |
With thionyl chloride | |
With phosphorus pentachloride In chlorobenzene at 140℃; for 6h; | |
With phosphorus pentachloride In chlorobenzene at 140℃; for 6h; |
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