Pyrogallol Red

Also known as: 1,2,3-BENZENETRIOL RED, 1,2,3-TRIHYDROXYBENZENE RED, PYROGALLOLSULFONPHTHALEIN, PYROGALLOSULFONPHTHALEIN, pyrogallolsulphonephthalein, Pyrogallol Red lactone, 1,1-dioxospiro[benzo[c][1,2]oxathiole-3,9'-xanthene]-3',4',5',6'-tetrol

Pyrogallol Red (CAS 3172-49-4) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C19H12O8S and a molecular weight of 400.35900 g/mol. Key property: a melting point of 300 â„ƒ(lit.). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3172-49-4
Jingsj CID: J-1313887-1
Molecular Formula: C₁₉H₁₂O₈S
Molecular Weight: 400.35900 g/mol
Category: Alcohols
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point	300 â„ƒ(lit.)
Exact Mass	400.02500
PSA	141.90000
LogP	3.70630

Frequently Asked Questions

What is the CAS number of Pyrogallol Red?

The CAS number of Pyrogallol Red is 3172-49-4.

What are the molecular formula and molecular weight of Pyrogallol Red?

Pyrogallol Red has molecular formula C19H12O8S and molecular weight 400.35900 g/mol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Pyrogallol Red (CAS 3172-49-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1313887-1 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.