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Dye intermediates

Pitstop 1

Also known as sodium, 2-[(4-aminophenyl)methyl]-1,3-dioxobenzo[de]isoquinoline-5-sulfonate, sodium 2-(4-aminobenzyl)-1,3-dioxo-2,3-dihydro-1H-benzo[de]isoquinoline-5-sulfonate

CAS 1332879-51-2Formula C19H13N2NaO5SMolar mass 404.38 g/mol
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Pitstop 1 chemical structure, C19H13N2NaO5S, CAS 1332879-51-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1332879-51-2
Formula
C19H13N2NaO5S
Molar mass
404.38 g/mol
HS code
292519
Category
Dye intermediates

What is Pitstop 1?

Plain description, key identifiers and synonyms

Pitstop 1 is a chemical substance with the molecular formula C19H13N2NaO5S and a molar mass of 404.38 g/mol. Its CAS registry number is 1332879-51-2. The IUPAC name is sodium 2-[(4-aminophenyl)methyl]-1,3-dioxobenzo[de]isoquinoline-5-sulfonate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
sodium 2-[(4-aminophenyl)methyl]-1,3-dioxobenzo[de]isoquinoline-5-sulfonate
CAS number
1332879-51-2
Molecular formula
C19H13N2NaO5S
InChIKey
MKPPGLKJTZAXNE-UHFFFAOYSA-M
InChI
InChI=1S/C19H14N2O5S.Na/c20-13-6-4-11(5-7-13)10-21-18(22)15-3-1-2-12-8-14(27(24,25)26)9-16(17(12)15)19(21)23;/h1-9H,10,20H2,(H,24,25,26);/q;+1/p-1
SMILES (canonical and isomeric)
C1=CC2=CC(=CC3=C2C(=C1)C(=O)N(C3=O)CC4=CC=C(C=C4)N)S(=O)(=O)[O-].[Na+]

Synonyms

  • sodium, 2-[(4-aminophenyl)methyl]-1,3-dioxobenzo[de]isoquinoline-5-sulfonate
  • sodium 2-(4-aminobenzyl)-1,3-dioxo-2,3-dihydro-1H-benzo[de]isoquinoline-5-sulfonate

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
404.38 g/molcalc.
Exact mass
404.0443 Dacalc.
LogP (octanol/water)
-0.87calc.
Topological polar surface area
120.6 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
6calc.
Rotatable bonds
3calc.
Heavy atoms
28calc.
Rings
4calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0.05calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.
Lipinski rule of five
Passes (0 violations)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=C1c2cccc3cccc(c23)C(=O)N1Cc1ccccc1

O=C1c2cccc3cccc(c23)C(=O)N1Cc1ccccc1

4 rings, 22 atoms, the 2-Benzyl-1H-benzo(de)isoquinoline-1,3(2H)-dione ring system.

17 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Pitstop 1 suppliers

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Pitstop 1 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

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Pitstop 1 is traded under.

HS 2925.19Indicative HS code

Imides and their derivatives, salts thereof, other

World exports in 2024
$295M
+11.7% vs 2023, imports $348M
2019 to 2024
Top exporters
  1. China29.7%
  2. Japan22.7%
  3. United Kingdom10.0%
Top importers
  1. United States12.7%
  2. Brazil12.6%
  3. China10.5%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Pitstop 1 is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Pitstop 1, based on the data on this page

What is Pitstop 1?

Pitstop 1 is a chemical substance with the molecular formula C19H13N2NaO5S and a molar mass of 404.38 g/mol. Its CAS registry number is 1332879-51-2. The IUPAC name is sodium 2-[(4-aminophenyl)methyl]-1,3-dioxobenzo[de]isoquinoline-5-sulfonate.

What is the CAS number of Pitstop 1?

The CAS registry number of Pitstop 1 is 1332879-51-2.

What is the molecular formula and weight of Pitstop 1?

The molecular formula of Pitstop 1 is C19H13N2NaO5S and its molar mass is 404.38 g/mol.

Is Pitstop 1 hazardous?

No GHS hazard classification for Pitstop 1 is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Pitstop 1?

Pitstop 1 is usually classified under HS code 292519 (Imides and their derivatives, salts thereof, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Pitstop 1?

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What is the price of Pitstop 1?

Suppliers quote Pitstop 1 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 Pitstop 1

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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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