alpha-Naphtholphthalein

Cat. No.: HY-W087913 Purity: 99.71%: FAQs
Data Sheet
SDS

COA
Handling Instructions Technical Support

alpha-Naphtholphthalein is an indicator that is light yellow at pH 6 and gradually shows a clear color change with increasing pH to light green-green-blue. alpha-Naphtholphthalein can be impregnated into cotton-blend fabrics and used to develop medical supplies for wound pH monitoring, such as medical gauze, hospital gowns and compression bandages.

For research use only. We do not sell to patients.

alpha-Naphtholphthalein Chemical Structure

CAS No. : 596-01-0

Size	Stock	Quantity
Free Sample (0.1 - 0.5 mg)	Apply Now
50 mg	In-stock	Estimated Time of Arrival: December 31
100 mg	In-stock	Estimated Time of Arrival: December 31
200 mg	Get quote
500 mg	Get quote

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This product is a controlled substance and not for sale in your territory.

Customer Review

Based on 1 publication(s) in Google Scholar

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Biological Activity
Purity & Documentation
References
Customer Review

Description

Molecular Weight

418.44

Formula

C₂₈H₁₈O₄

CAS No.

596-01-0

Appearance

Solid

Color

Off-white to light yellow

SMILES

O=C1OC(C2=CC=C(C3=C2C=CC=C3)O)(C4=CC=C(C5=C4C=CC=C5)O)C6=C1C=CC=C6

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

4°C, sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

Solvent & Solubility

In Vitro:

DMSO : 100 mg/mL (238.98 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions

Concentration Solvent Mass	1 mg	5 mg	10 mg

1 mM	2.3898 mL	11.9491 mL	23.8983 mL
5 mM	0.4780 mL	2.3898 mL	4.7797 mL
10 mM	0.2390 mL	1.1949 mL	2.3898 mL

View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

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Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Concentration _(start) × Volume _(start) = Concentration _(final) × Volume _(final)

This equation is commonly abbreviated as: C₁V₁ = C₂V₂

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Concentration _(final)

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In Vivo Dissolution Calculator

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Calculation results:

Working solution concentration: mg/mL

Purity & Documentation

Purity: 99.71%

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Data Sheet (279 KB) SDS (393 KB)

COA (263 KB) HNMR (258 KB) LCMS (93 KB)

Handling Instructions (2659 KB)

References

[1]. Seo HS, et al. Facile and cost-effective fabrication of wearable alpha-naphtholphthalein-based halochromic sensor for wound pH monitoring. Nanotechnology. 2024 Mar 27;35(24). [Content Brief]

Complete Stock Solution Preparation Table

Optional Solvent	Concentration Solvent Mass	1 mg	5 mg	10 mg	25 mg

DMSO	1 mM	2.3898 mL	11.9491 mL	23.8983 mL	59.7457 mL
	5 mM	0.4780 mL	2.3898 mL	4.7797 mL	11.9491 mL
	10 mM	0.2390 mL	1.1949 mL	2.3898 mL	5.9746 mL
	15 mM	0.1593 mL	0.7966 mL	1.5932 mL	3.9830 mL
	20 mM	0.1195 mL	0.5975 mL	1.1949 mL	2.9873 mL
	25 mM	0.0956 mL	0.4780 mL	0.9559 mL	2.3898 mL
	30 mM	0.0797 mL	0.3983 mL	0.7966 mL	1.9915 mL
	40 mM	0.0597 mL	0.2987 mL	0.5975 mL	1.4936 mL
	50 mM	0.0478 mL	0.2390 mL	0.4780 mL	1.1949 mL
	60 mM	0.0398 mL	0.1992 mL	0.3983 mL	0.9958 mL
	80 mM	0.0299 mL	0.1494 mL	0.2987 mL	0.7468 mL
	100 mM	0.0239 mL	0.1195 mL	0.2390 mL	0.5975 mL