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30-2290

Sigma-Aldrich

Thymolphthalein

JIS special grade

Synonym(s):

5′,5′′-Diisopropyl-2′,2′′-dimethylphenolphthalein

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About This Item

Empirical Formula (Hill Notation):
C28H30O4
CAS Number:
125-20-2
Molecular Weight:
430.54
Beilstein:
359413
MDL number:
MFCD00005909
UNSPSC Code:
12171502
PubChem Substance ID:
329753351

grade

JIS special grade

form

solid

availability

available only in Japan

mp

251-253 °C (lit.)

SMILES string

CC(C)c1cc(c(C)cc1O)C2(OC(=O)c3ccccc23)c4cc(C(C)C)c(O)cc4C

InChI

1S/C28H30O4/c1-15(2)20-13-23(17(5)11-25(20)29)28(22-10-8-7-9-19(22)27(31)32-28)24-14-21(16(3)4)26(30)12-18(24)6/h7-16,29-30H,1-6H3

InChI key

LDKDGDIWEUUXSH-UHFFFAOYSA-N

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Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Ali Babaei et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 22(7), 955-959 (2006-07-14)
A novel, sensitive and selective adsorptive stripping procedure for simultaneous determination of copper, bismuth and lead is presented. The method is based on the adsorptive accumulation of thymolphthalexone (TPN) complexes of these elements onto a hanging mercury drop electrode, followed
Y Tsuda et al.
The Japanese journal of antibiotics, 46(1), 1-7 (1993-01-01)
We presented a new colorimetric bioassay of aminoglycoside antibiotics, which were represented by netilmicin (NTL) in this study, based on the discoloration of thymolphthalein (TP) in paper (indicator-disc) by carbon dioxide produced by Bacillus subtilis. To evaluate the amount of
Olaf A Cirpka et al.
Ground water, 44(2), 212-221 (2006-03-25)
With most existing methods, transverse dispersion coefficients are difficult to determine. We present a new, simple, and robust approach based on steady-state transport of a reacting agent, introduced over a certain height into the porous medium of interest. The agent
Elodie Verhaeghe et al.
Analytical biochemistry, 379(1), 60-65 (2008-05-22)
The standard assay for iodoperoxidase activity is based on the spectrophotometric detection of triiodide formed during the enzymatic reaction. However, chemical instability of I3- has limited the method to high iodide concentrations and acidic conditions. Here we describe a simple
Ali A Ensafi et al.
Journal of hazardous materials, 148(1-2), 319-325 (2007-03-30)
An on-line flow system was used to develop a selective and efficient on-line sorbent extraction preconcentration system for cadmium. The method is based on adsorption of cadmium ions onto the activated carbon modified with methyl thymol blue. Then the adsorbed
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