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Indicators and stains

Bromopyrogallol red

Also known as Pyrogallol bromine red, Spiro[3H-2,1-benzoxathiole-3,9'-[9H]xanthene]-3',4',5',6'-tetrol, 2',7'-dibromo-, 1,1-dioxide, Spiro(3H-2,1-benzoxathiole-3,9'-(9H)xanthene)-3',4',5',6'-tetrol, 2',7'-dibromo-, 1,1-dioxide

CAS 16574-43-9Formula C19H10Br2O8SMolar mass 558.16 g/molEC 240-632-6
GHS hazard pictograms. Pictograms: Hazardous to the environment 16 suppliers listed
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Bromopyrogallol red chemical structure, C19H10Br2O8S, CAS 16574-43-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
16574-43-9
Formula
C19H10Br2O8S
Molar mass
558.16 g/mol
EC number
240-632-6
HS code
293499
Category
Indicators and stains

What is Bromopyrogallol red?

Plain description, key identifiers and synonyms

Bromopyrogallol red is a chemical substance with the molecular formula C19H10Br2O8S and a molar mass of 558.16 g/mol. Its CAS registry number is 16574-43-9. The IUPAC name is 2',7'-dibromo-1,1-dioxospiro[2,1ฮป6-benzoxathiole-3,9'-xanthene]-3',4',5',6'-tetrol.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2',7'-dibromo-1,1-dioxospiro[2,1ฮป6-benzoxathiole-3,9'-xanthene]-3',4',5',6'-tetrol
CAS number
16574-43-9 CAS number cross-checked
EC number
240-632-6
Molecular formula
C19H10Br2O8S
UNII
A6NS5EJ2GF
MDL number
MFCD00148865
InChIKey
QFXYYBXMARTXHI-UHFFFAOYSA-N
InChI
InChI=1S/C19H10Br2O8S/c20-10-5-8-17(15(24)13(10)22)28-18-9(6-11(21)14(23)16(18)25)19(8)7-3-1-2-4-12(7)30(26,27)29-19/h1-6,22-25H
SMILES (canonical and isomeric)
C1=CC=C2C(=C1)C3(C4=CC(=C(C(=C4OC5=C(C(=C(C=C53)Br)O)O)O)O)Br)OS2(=O)=O

Synonyms

  • Pyrogallol bromine red
  • Spiro[3H-2,1-benzoxathiole-3,9'-[9H]xanthene]-3',4',5',6'-tetrol, 2',7'-dibromo-, 1,1-dioxide
  • Spiro(3H-2,1-benzoxathiole-3,9'-(9H)xanthene)-3',4',5',6'-tetrol, 2',7'-dibromo-, 1,1-dioxide
  • 2',7'-Dibromo-3',4',5',6'-tetrahydroxyspiro[benzo[c][1,2]oxathiole-3,9'-xanthene] 1,1-dioxide
  • Dibromopyrogallolsulfonphthaleine
  • Brompyrogallol Red
  • 2',7'-dibromo-1,1-dioxospiro[2,1lambda6-benzoxathiole-3,9'-xanthene]-3',4',5',6'-tetrol
  • 2',7'-Dibromo-3',4',5',6'-tetrahydroxyspiro[benzo-[c][1,2]oxathiole-3,9'-xanthene] 1,1-dioxide
  • Brompyrogallolrot
  • US8987474, Bromopyrogallol
  • alpha-(5-Bromo-2,3-dihydroxy-4-oxo-2,5-cyclohexadienylidene)-alpha-(5-bromo-2,3,4-trihydroxyphenyl)toluenesulphonic acid
  • 5 ,5 -Dibromopyro- gallolsulfonephthalein
  • Bromopyrogallol Red, indicator grade, Dye content 70 %
  • 2',7'-dibromo-1,1-dioxospiro[2,1$l^{6-benzoxathiole-3,9'-xanthene]-3',4',5',6'-tetrol
  • Spiro[3H-2,9'-[9H]xanthene]-3',4',5',6'-tetrol, 2',7'-dibromo-, 1,1-dioxide
  • Spiro[3H-2,9'-xanthene]-3',4',5',6'-tetrol, 2',7'-dibromo-, 1,1-dioxide
  • 2',7'-dibromo-1,1-dioxo-spiro[2,1lambda6-benzoxathiole-3,9'-xanthene]-3',4',5',6'-tetrol
  • 2',7'-Dibromo-3',4',5',6'-tetrahydroxy-1H-1lambda~6~-spiro[[2,1]benzoxathiole-3,9'-xanthene]-1,1-dione

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
558.16 g/molcalc.
Exact mass
555.8463 Dacalc.
LogP (octanol/water)
4.15calc.
Topological polar surface area
133.5 ร…ยฒcalc.
Hydrogen bond donors
4calc.
Hydrogen bond acceptors
8calc.
Rotatable bonds
0calc.
Heavy atoms
30calc.
Rings
5calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0.05calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (1 violation)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=S1(=O)OC2(c3ccccc3Oc3ccccc32)c2ccccc21

O=S1(=O)OC2(c3ccccc3Oc3ccccc32)c2ccccc21

5 rings, 24 atoms.

4 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS classification
Hazard pictograms
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (3)
  • P273Avoid release to the environment.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Bromopyrogallol red suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 16 suppliers
16 of 16 offers

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Where suppliers are based

16 suppliers in 3 countries

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Bromopyrogallol red price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Bromopyrogallol red is traded under.

HS 2934.99Indicative HS code

Nucleic acids and their salts, other heterocyclic compounds, not elsewhere classified in heading 2934

World exports in 2024
$26.7B
+15.0% vs 2023, imports $26.3B
2019 to 2024
Top exporters
  1. Ireland26.3%
  2. China15.7%
  3. Singapore10.3%
Top importers
  1. United States24.5%
  2. Germany23.1%
  3. Japan4.5%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Bromopyrogallol red is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Bromopyrogallol red, based on the data on this page

What is Bromopyrogallol red?

Bromopyrogallol red is a chemical substance with the molecular formula C19H10Br2O8S and a molar mass of 558.16 g/mol. Its CAS registry number is 16574-43-9. The IUPAC name is 2',7'-dibromo-1,1-dioxospiro[2,1ฮป6-benzoxathiole-3,9'-xanthene]-3',4',5',6'-tetrol.

What is the CAS number of Bromopyrogallol red?

The CAS registry number of Bromopyrogallol red is 16574-43-9.

What is the molecular formula and weight of Bromopyrogallol red?

The molecular formula of Bromopyrogallol red is C19H10Br2O8S and its molar mass is 558.16 g/mol.

What is Bromopyrogallol red used for?

Known uses and roles of Bromopyrogallol red include indicators and stains in research and laboratory.

Is Bromopyrogallol red hazardous?

Bromopyrogallol red has a GHS hazard classification. Main hazards: toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Bromopyrogallol red?

Bromopyrogallol red is usually classified under HS code 293499 (Nucleic acids and their salts, whether or not chemically defined, other heterocyclicโ€ฆ). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Bromopyrogallol red?

CompoundList lists 16 suppliers of Bromopyrogallol red in India, United Arab Emirates and Oman. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Bromopyrogallol red in India?

12 suppliers in India list Bromopyrogallol red on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Bromopyrogallol red?

Suppliers quote Bromopyrogallol red on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Bromopyrogallol red

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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