Chemodex

Thymolphthalein

Name: Thymolphthalein
Brand: Chemodex
SKU: CDX-T0534
Price: 58.00 CHF
Availability: InStock

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CDX-T0534-G01010 gCHF 58.00

CDX-T0534-G05050 gCHF 155.00

Specifications / Handling

More Information
Product Details
Synonyms	3,3-Bis(4-hydroxy-5-isopropyl-2-methylphenyl)isobenzofuran-1(3H)-one; 5?,5??-Diisopropyl-2?,2??-dimethylphenolphthalein; ; NSC 2186
Product Type	Chemical
Properties
Formula	C₂₈H₃₀O₄
MW	430.54
CAS	125-20-2
Source/Host Chemicals	Synthetic
Purity Chemicals	≥99% (HPLC)
Appearance	White, faint beige powder or crystals.
Solubility	Soluble in DMSO or EtOH (1mg/ml).
Identity	Determined by ¹H-NMR.
Declaration	Manufactured by Chemodex.
Other Product Data	Click here for Original Manufacturer Product Datasheet Our product description may differ slightly from the original manufacturers product datasheet.
InChi Key	LDKDGDIWEUUXSH-UHFFFAOYSA-N
Smiles	O=C1C2=CC=CC=C2C(C3=C(C)C=C(O)C(C(C)C)=C3)(C4=C(C)C=C(O)C(C(C)C)=C4)O1
Shipping and Handling
Shipping	AMBIENT
Short Term Storage	+20°C
Long Term Storage	+20°C
Handling Advice	Keep under inert gas. Very hygroscopic.
Use/Stability	Stable for at least 2 years after receipt when stored at RT.
Documents
Product Specification Sheet
Datasheet	Download PDF

Scientific Background Information

Product Description

Thymolphthalein is a phthalein dye used as an acid-base (pH) indicator. It changes color depending on the pH of the solution. The pH transition range is from < 9.3 (colorless), 9.3-10.5 (light blue) to > 10.5 (deep blue). Spectral Data: λmax (UV-Vis): 590-598nm (0.1M NaOH). Specific Absorbance (E 1%/1cm): >750 @λmax. Can be used as a building block to synthesize Thymolphthalein monophosphate which is used as a substrate in enzymatic assays (e.g. alkaline phosphatase, ALP) and is used in clinical diagnostics, forensic tests and enzyme kinetics.

Product-specific References

(1) M. Mohamed, et al.; Can. J. Chem. 57, 1294 (1979) | (2) T. Lin, et al.; Chem. Commun. (Camb) 59, 12986 (2023)

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