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重要文件

114472

Sigma-Aldrich

甲酚红

indicator grade, Dye content 95 %

同義詞:

邻甲酚磺酰酞

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About This Item

經驗公式(希爾表示法):
C21H18O5S
CAS號碼:
分子量::
382.43
Beilstein:
343399
EC號碼:
MDL號碼:
分類程式碼代碼:
12171500
PubChem物質ID:
NACRES:
NA.47

等級

indicator grade

品質等級

形狀

powder or crystals

成份

Dye content, 95%

技術

titration: suitable

顏色

red-brown

pH值

7.2-8.8, yellow to red

有用的pH值範圍

1.8-2.0, orange to yellow(acid)
7.0-8.8, yellow to violet(alkaline)

mp

290 °C

密度

0.998 g/cm3

λmax

367 nm (2nd)
570 nm

應用

diagnostic assay manufacturing
hematology
histology

儲存溫度

room temp

SMILES 字串

Cc1cc(ccc1O)C2(OS(=O)(=O)c3ccccc23)c4ccc(O)c(C)c4

InChI

1S/C21H18O5S/c1-13-11-15(7-9-18(13)22)21(16-8-10-19(23)14(2)12-16)17-5-3-4-6-20(17)27(24,25)26-21/h3-12,22-23H,1-2H3

InChI 密鑰

OBRMNDMBJQTZHV-UHFFFAOYSA-N

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一般說明

甲酚红(Cresol Red),又名邻甲酚红,属于酞和磺酞类染料。在pH 0.2-1.8之间,甲酚红由橙色变为黄色,在pH 7.0-8.8之间,由黄色变为紫色。在碱性溶液中,甲酚红为亲水性双阴离子。双阴离子形式为小分子,呈紫色,具有比黄色羟醌形式更大的共轭结构。

應用

甲酚红广泛用作pH指示剂,用于微生物培养基等的日常pH监测。此外,甲酚红也适合用作PCR反应体系的试剂组分。甲酚红还可用作DNA、RNA(琼脂糖)和蛋白(聚丙烯酰胺)凝胶电泳的示踪染料。

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

個人防護裝備

dust mask type N95 (US), Eyeshields, Gloves


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Atsushi Seki et al.
Analytica chimica acta, 582(1), 154-157 (2007-03-28)
Novel spectroscopic sensor based on a hetero-core structured fiber optic is described in this paper. The hetero-core structured fiber optic consists of multi mode fibers and a short piece of single mode fiber which was inserted in the multi mode
Paula C A Jerónimo et al.
The Analyst, 130(8), 1190-1197 (2005-07-16)
An optical biosensor based on immobilised carbonic anhydrase and its application to the determination of the anti-glaucoma agent acetazolamide by enzyme inhibition measurements, is described. The enzyme and a pH indicator dye, cresol red, were physically immobilised in overlapped sol-gel
Berthold Borucki et al.
Biochemistry, 41(31), 10026-10037 (2002-07-31)
We studied the kinetics of proton uptake and release by photoactive yellow protein (PYP) from Ectothiorhodospira halophila in wild type and the E46Q and E46A mutants by transient absorption spectroscopy with the pH-indicator dyes bromocresol purple or cresol red in
M Swati et al.
Analytica chimica acta, 676(1-2), 68-74 (2010-08-31)
An optical biosensing scheme based on urease encapsulated calcium alginate microspheres which are coated with polyelectrolyte nanofilms predominantly composed of cresol red (CR) dye is demonstrated in this paper. The dye molecules within the nanofilms are deposited via the layer-by-layer
K Horie et al.
Analytical biochemistry, 137(1), 80-87 (1984-02-01)
A highly sensitive quantitative method was developed to detect protons released or taken up upon ligand binding. A small change in pH due to proton release or uptake was detected by measuring the difference in the absorbance of a pH

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