Pyrogallol red

Name: Pyrogallol red
Brand: Vaqora Chemicals
SKU: VQ-046791

About Pyrogallol red

Pyrogallol red (CAS 32638-88-3) is a biological stain offered by Vaqora Chemicals. Formula C19H12O8S, molecular weight 400.4 g/mol. Systematically, it is named 1,1-dioxospiro[2,1lambda6-benzoxathiole-3,9'-xanthene]-3',4',5',6'-tetrol. Alternative names: Pyrogallolsulfonephthalein and Pyrogallol sulfonphthalein.

Keep the container tightly sealed and store it in a cool, dry area. Good laboratory practice and suitable PPE are recommended during handling.

It is commonly used for histology and cytology staining, microscopy, clinical laboratories and indicator for titrations. Typical end-use sectors are academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

We offer Pyrogallol red in 1 g and 5 g packs with a batch-specific COA, and ship to customers worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request. Custom pack sizes, bulk quantities and specific analytical data can be arranged on request.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Indicator for titrations

Industries

Specifications & identifiers

Chemical identifiers
Product name	Pyrogallol red
Catalogue No.	VQ-046791
CAS Number	32638-88-3
IUPAC name	1,1-dioxospiro[2,1lambda6-benzoxathiole-3,9'-xanthene]-3',4',5',6'-tetrol
Molecular formula	C₁₉H₁₂O₈S
Molecular weight	400.4 g/mol
Exact mass	400.0253
HSN code	29349900
InChIKey	KUQNCHZOCSYKOR-UHFFFAOYSA-N
SMILES	C1=CC=C2C(=C1)C3(C4=C(C(=C(C=C4)O)O)OC5=C3C=CC(=C5O)O)OS2(=O)=O
PubChem CID	94437

Physical properties
Physical form	Other
LogP (XLogP3)	2.1
H-bond donors / acceptors	4 / 8
TPSA	142 Å²
Synonyms	Pyrogallolsulfonephthalein, Pyrogallol sulfonphthalein, Spiro(3H-2,1-benzoxathiole-3,9'-(9H)xanthene)-3',4',5',6'-tetrol, 1,1-dioxide, Spiro[3H-2,1-benzoxathiole-3,9'-[9H]xanthene]-3',4',5',6'-tetrol, 1,1-dioxide, 3',4',5',6'-Tetrahydroxyspiro[benzo[c][1,2]oxathiole-3,9'-xanthene] 1,1-dioxide, 3',4',5',6'-tetrahydroxyspiro[2,1-benzoxathiole-3,9'-xanthene]-1,1-dione, 3',4',5',6'-Tetrahydroxyspiro[benzo[c][1,2]oxathiole-3,9'-xanthene]1,1-dioxide, US8987474, PyrogallolRed, 12,13,14,15-tetrahydroxyspiro[benzo[c]1,2-oxathiolane-3,9'-xanthene]-1,1-dione, 3',4',5',6'-tetrahydroxyspiro[2,1lambda-benzoxathiole-3,9'-xanthene]-1,1-dione, 3',4',5',6'-tetrahydroxyspiro[2,1lambda6-benzoxathiole-3,9'-xanthene]-1,1-dione

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 32638-88-3

AR

Pyrogallol red, GR

CAS: 32638-88-3
Formula: C₁₉H₁₂O₈S
MW: 400.4 g/mol

VQ-000691

Frequently asked questions

What is the CAS number of Pyrogallol red?

The CAS Registry Number of Pyrogallol red is 32638-88-3. It is also known as Pyrogallolsulfonephthalein, Pyrogallol sulfonphthalein, Spiro(3H-2,1-benzoxathiole-3,9'-(9H)xanthene)-3',4',5',6'-tetrol, 1,1-dioxide.

What is the molecular formula and molecular weight of Pyrogallol red?

Pyrogallol red has the molecular formula C19H12O8S and a molecular weight of 400.4 g/mol. Its IUPAC name is 1,1-dioxospiro[2,1lambda6-benzoxathiole-3,9'-xanthene]-3',4',5',6'-tetrol.

Which grade and pack sizes of Pyrogallol red can I order?

We supply Pyrogallol red, in 1 g, 5 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Pyrogallol red?

Yes. Every lot of Pyrogallol red is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Pyrogallol red be shipped internationally?

Yes. We export Pyrogallol red worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.