Global Supplier of Fine Chemicals · Established 2014
Phenol Red structure
Fine Chemical

Phenol Red

TL;DR: Phenol Red (CAS 143-74-8) is a chemical compound with molecular formula C19H14O5S and molecular weight 354.05618 g/mol, supplied by CoreyChem (Career Henan Chemical Co., Ltd.) with ISO-certified quality and global shipping.

4-[3-(4-hydroxyphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]phenol

Also Known As: PHENOL RED, phenolsulfonphthalein, Fenolipuna, Sulphonthal, Sulfonphthal

CAS Number
143-74-8
Molecular Formula
C19H14O5S
Molecular Weight
354.05618 g/mol
GLP Laboratory Quality Control
Worldwide Shipping
Serving 1,000+ Global Customers

Application Areas

Top 5 of 22 IPC patent classification(s) from the SureChEMBL global patent database.

Agrochemicals (496 patents) Analytical Reagents (3121 patents) Biotechnology (11647 patents) Catalysts (53 patents) Coatings & Adhesives (57 patents)

Technical Specifications

Molecular FormulaC19H14O5S
Molecular Weight354.05618 g/mol
XLogP3.0
Topological Polar Surface Area (TPSA)92.2 Ų
Hydrogen Bond Donors2
Hydrogen Bond Acceptors5
Rotatable Bonds2
Exact Mass354.05618 Da
Heavy Atoms25
Complexity545.0
SMILESC1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC=C(C=C3)O)C4=CC=C(C=C4)O
InChIKeyBELBBZDIHDAJOR-UHFFFAOYSA-N

Product Description

Applications: Phenol Red is used in pharmaceutical synthesis routes and API production, as well as biotechnology workflows and life-science research. It commonly serves as a versatile building block for organic synthesis. Available from CoreyChem as both catalog item and custom-synthesis project (mg to ton scale), with full analytical documentation (COA, MSDS, HPLC, NMR, MS).

Phenol Red (CAS 143-74-8) is a pharmaceutical intermediate with the molecular formula C19H14O5S and a molecular weight of 354.06 g/mol. Synonyms include PHENOL RED and phenolsulfonphthalein.

Custom synthesis and full analytical documentation (COA/MSDS) are available from CoreyChem. Request a quotation with your required quantity and purity for current lead time and pricing.

Chemical Property Profile of Phenol Red

XLogP
3.0
TPSA (Topological Polar Surface Area)
92.2
Hydrogen Bond Donors
2
Hydrogen Bond Acceptors
5
Rotatable Bonds
2
Heavy Atoms
25
Complexity
545.0
Exact Mass
354.05618
Monoisotopic Mass
354.05618
Data Source: Chemical property values are referenced from PubChem, the world's largest open chemistry database maintained by the National Center for Biotechnology Information (NCBI), U.S. National Library of Medicine.

Property Insights of Phenol Red

The XLogP value of 3.0 indicates that Phenol Red is lipophilic (fat-soluble), which may influence its absorption, distribution, and formulation strategy. The TPSA of 92.2 Ų falls within the moderate polarity range, balancing permeability and solubility for Phenol Red. Following Lipinski's Rule of Five, Phenol Red has 2 hydrogen bond donor(s) and 5 hydrogen bond acceptor(s), all within the drug-like range, suggesting favorable oral bioavailability potential.

Frequently Asked Questions

What is the CAS number of Phenol Red?

The CAS number of Phenol Red is 143-74-8.

What is the molecular formula of Phenol Red?

The molecular formula of Phenol Red is C19H14O5S.

What is the molecular weight of Phenol Red?

The molecular weight of Phenol Red is 354.05618 g/mol.

What are the applications of Phenol Red?

Phenol Red is used in pharmaceutical synthesis routes and API production, as well as biotechnology workflows and life-science research. It commonly serves as a versatile building block for organic synthesis. Available from CoreyChem as both catalog item and custom-synthesis project (mg to ton...

Where can I buy Phenol Red?

You can request a quote for Phenol Red directly from CoreyChem. Contact us or email [email protected] for pricing and availability.

Does CoreyChem offer custom synthesis for Phenol Red?

Yes, CoreyChem provides custom synthesis services for Phenol Red and related compounds. Contact us with your specific requirements including quantity, purity, and timeline.

Related Articles

colorants-dyes 2026-06-09 23:43:23.560536

Phenol Red (CAS 143-74-8)

Executive summary: Phenol red (CAS 143-74-8) is a pH indicator dye widely used in cell culture media, diagnostic assays, and pharmaceutical research as a colorimetric pH sensor. This specialty chemica

Related Chemical Products

CAS: 60-24-2
C2H6OS · MW 78.01394
CAS: 3268-49-3
C4H8OS · MW 104.02959
CAS: 2206-27-1
C2H6OS · MW 84.0516
CAS: 367-93-1
C9H18O5S · MW 238.0875

Need Phenol Red?

Request a quote for CAS 143-74-8. Our professional technical team will respond with pricing and lead time.

Get a Quote
WhatsApp Us