Oftasccin

Oftasccin Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:

R20/21/22:Gesundheitsschädlich beim Einatmen,Verschlucken und Berührung mit der Haut.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.

S-Sätze Betriebsanweisung:

S22:Staub nicht einatmen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.

Chemische Eigenschaften

orange crystals

Verwenden

Calcein is used for determination of Ca in biological systems. Indicator for the fluorimetric determination of calcium in presence of Mg by complexometric titration.

läuterung methode

Dissolve it in distilled H2O and acidify with dilute HCl to pH 3.5. Filter off the solid acid and wash it well with H2O. Redissolve ca 10g in 300mL H2O containing 12g of NaOAc. Precipitate it again by adding HCl, filtering and washing with H2O. Add the solid to 200mL of EtOH stir for 1hour and filter. Repeat the EtOH wash and dry the bright yellow solid in a vacuum. This acid decomposes on heating at ca 180o. See below for the preparation of the Na salt. [Diehl & Ellingboe Anal Chem 28 882 1956]. Altenatively dissolve it in H2O and acidify with 3N HCl to pH 3.5. Collect the solid and wash it with H2O. The air-dried precipitate is extracted with 70% aqueous EtOH, filtered hot and cooled slowly. Fine yellow needles of the acid crystallise out; they are filtered off and dissolved in the minimum quantity of 0.01N NaOH and re-precipitated by adding N HCl to pH 3.5. It is then recrystallised from 70% aqueous EtOH (3x). The final product (acid) is dried at 80o in a vacuum for 24hours, m >300o(dec). It contains one molecule of water per molecule of acid (C30H36N4O13.H2O). The product is pure as revealed by electrophoresis at pH 5.6 and 8.6, and by TLC in i-BuOH/i-PrOH/AcOH/H2O (60:60:5:5 by volume) or i-PrOH or pH 8.0 borate buffer. [Wallach et al. Anal Chem 31 456 1959.] The Na salt is prepared by dissolving the pure acid in H2O containing 2 mols of NaOH per mol of acid reagent and lyophilising. It complexes with Ca and Mg ions. [Beilstein 19 III/IV 4338.]

Oftasccin Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte

Oftasccin Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Firmenname	Telefon	E-Mail	Land	Produktkatalog	Edge Rate
Hangzhou FandaChem Co.,Ltd.	008657128800458; +8615858145714	fandachem@gmail.com	China	9348	55
career henan chemical co	+86-0371-86658258	sales@coreychem.com	China	29914	58
Chongqing Chemdad Co., Ltd	+86-023-61398051 +8613650506873	sales@chemdad.com	China	39916	58
Alchem Pharmtech,Inc.	8485655694	sales@alchempharmtech.com	United States	63711	58
Shenyang Simchoice Chemical Co.,Ltd	+86-024-23769576 +86-15040101888	sales@simchoicechem.com	China	255	58
CONIER CHEM AND PHARMA LIMITED	+8618523575427	sales@conier.com	China	49390	58
TargetMol Chemicals Inc.	+1-781-999-5354 +1-00000000000	marketing@targetmol.com	United States	19892	58
Career Henan Chemica Co	+86-0371-86658258 15093356674;	laboratory@coreychem.com	China	30255	58
Hefei TNJ Chemical Industry Co.,Ltd.	0551-65418671	sales@tnjchem.com	China	34572	58
Shanghai UCHEM Inc.	+862156762820 +86-13564624040	sales@myuchem.com	China	6710	58

1461-15-0(Oftasccin)Verwandte Suche:

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• BIS[N,N-BIS(CARBOXYMETHYL)AMINOMETHYL]FLUORESCEIN
• CALCEINE
• CALCEIN, INDICATOR
• FLUORESCEIN-2,7-BIS-METHYLIMINODIACETIC SODIUM SALT
• FLUORESCEIN COMPLEXON
• FLUORESCEIN COMPLEXONE
• FLUORESCEIN-METHYLENE-IMINODIACETIC ACID
• FLUOREXON
• FLUOREXONE
• FLUREXONE
• LABOTEST-BB LT00159821
• 2,7-BLS[BIS(CARBOXYMETHYL)AMINOMETHYL]-FLUORESCEIN
• 3,3'-BIS[N,N-BIS(CARBOXYMETHYL)AMINOMETHYL]FLUORESCEIN
• 3,6-DIHYDROXY-2,4-BIS-N,N'-DI-(CARBOXYMETHYL)-AMINOMETHYL FURAN
• FLUOREXON, INDICATOR GRADE
• CALCEIN INDICATOR FOR THE COMPLEXOMETRY
• CalceineIndicatorGr
• CalceineIndicatorGr(FluoresceinComplexone)
• CalceineIndicatorGr-(FluoresceinComplexon)
• FLUORESCEIN COMPLEXONE GR
• Bis[N,N-bis(carboxymethyl)aminomethyl]fluorescein~Fluorexon
• Oftasceine
• Glycine, N,N-(3,6-dihydroxy-3-oxospiroisobenzofuran-1(3H),9-9Hxanthene-2,7-diyl)bis(methylene)bisN-(carboxymethyl)-
• CALCEIN(RG)
• Fluorescein di-(methylimino diacetic acid)
• Calcein(Fluorexone)
• Calcein [for Fluorometric Determination of Ca]
• Fluorescein-bis(methyliminodiacetic acid), Fluorexon, Bis[N,N-bis(carboxymethyl)aminomethyl]fluorescein
• Bis[N,N-bis(carboxymethyl)aminomethyl]fluorescein, Calcein, Fluorescein Complexon
• N,N'-[[3',6'-Dihydroxy-3-oxospiro[isobenzofuran-1(3H),9'-[9H]xanthene]-2',7'-diyl]bis(methylene)]bis[N-(carboxymethyl)glycine]
• Calcein,Bis[N,Nbis(carboxymethyl)aminomethyl]fluorescein, Fluorescein-bis(methyliminodiacetic acid), Fluorexon
• Calcein, indicator for metal titration
• Bis-[di(carboxyMethylaMinoMethyl)]flurescein sodiuM salt
• Fluorescein-2,7-bis-MethylaMinodiacetic acid sodiuM salt
• CALCEIN HYDRATE: FOR FLUOROMETRIC DETERMINATION OF CA
• CALCEIN INDICATOR FOR METAL DETERMINATIO
• 7’-diyl)bis(methylene)]bis[n-(carboxymethyl)--2
• glycine,n,n’-[(3’,6’-dihydroxy-3-oxospiro[isobenzofuran-1(3h),9’-[9h]xanthene]
• N,N’-[(3’,6’-dihydroxy-3-oxospiro(isobenzofuran-1(3H),9’-(9H)xanthene)-2’,7’-diyl)bis(methyGlycine
• Fluorescein-bis(methyliminodiacetic acid)
• N,N'-[[3'
• oftasccine
• 2,2',2'',2'''-(((3',6'-Dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-2',7'-diyl)bis(Methylene))bis(azanetriyl))tetraacetic acid
• Fluorescein, 2′,7′-bis[[bis(carboxymethyl)amino]methyl]-
• Spiro[isobenzofuran-1(3h),9′-[9h]xanthene], glycine deriv.
• 2,7-bis[n,n-bis(carboxymethyl)aminomethylene]- Uo-rescein
• Acetic acid, [(3′,6′-dihydroxy-2′,7′- Uorandiyl)bis-(methylenenitrilo)]tetra-
• Nsc 298193
• Spiro[isobenzofuran-1(3h),9′-[9h]xanthene], glycine derivative
• Fluorescein, 2 0 ,7 0 -bis[[bis(carboxymethyl) amino]methyl]-
• Spiro[isobenzofuran-1(3 h ),9 0 -[9 h ]xanthene], Glycine derivative
• Acetic Acid, [(3 0 ,6 0 -dihydroxy-2 0 ,7 0 -fluor- andiyl)bis(methylenenitrilo)]tetra-
• Calcein indicator for metal determination
• Calcein, Suitable for fluorometric determination of calcium and EDTA titration of calcium in the presence of magnesium.
• Calcein, AR
• CALCEINCALCEINCALCEIN
• 3,3'-Bis[N,N-bis(carboxymethyl)aminomethyl]fluorescein (Calcein)
• Calcein, GR