CompoundList
Sign in
Screening compounds

Dnpns

Also known as 2,7-Naphthalenedisulfonic acid, 3-(2-(2,4-dinitrophenyl)diazenyl)-4-hydroxy-, 2,7-Naphthalenedisulfonic acid, 3-[2-(2,4-dinitrophenyl)diazenyl]-4-hydroxy-, Phenaphthazine free acid

CAS 1716-22-9Formula C16H10N4O11S2Molar mass 498.41 g/mol
Get quotes Safety data
Dnpns chemical structure, C16H10N4O11S2, CAS 1716-22-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1716-22-9
Formula
C16H10N4O11S2
Molar mass
498.41 g/mol
HS code
292700
Category
Screening compounds

What is Dnpns?

Plain description, key identifiers and synonyms

Dnpns is a chemical substance with the molecular formula C16H10N4O11S2 and a molar mass of 498.41 g/mol. Its CAS registry number is 1716-22-9. The IUPAC name is 3-[(2,4-dinitrophenyl)diazenyl]-4-hydroxynaphthalene-2,7-disulfonic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-[(2,4-dinitrophenyl)diazenyl]-4-hydroxynaphthalene-2,7-disulfonic acid
CAS number
1716-22-9 CAS number cross-checked
Molecular formula
C16H10N4O11S2
UNII
USH6E4Z2F7
InChIKey
AYCFJUKXFTYTGH-UHFFFAOYSA-N
InChI
InChI=1S/C16H10N4O11S2/c21-16-11-3-2-10(32(26,27)28)5-8(11)6-14(33(29,30)31)15(16)18-17-12-4-1-9(19(22)23)7-13(12)20(24)25/h1-7,21H,(H,26,27,28)(H,29,30,31)
SMILES (canonical and isomeric)
C1=CC(=C(C=C1[N+](=O)[O-])[N+](=O)[O-])N=NC2=C(C=C3C=C(C=CC3=C2O)S(=O)(=O)O)S(=O)(=O)O

Synonyms

  • 2,7-Naphthalenedisulfonic acid, 3-(2-(2,4-dinitrophenyl)diazenyl)-4-hydroxy-
  • 2,7-Naphthalenedisulfonic acid, 3-[2-(2,4-dinitrophenyl)diazenyl]-4-hydroxy-
  • Phenaphthazine free acid
  • 2-((2,4-Dinitrophenyl)azo)-1-naphthol 3,6-disulfonic acid
  • 3,6-Naphthalenedisulfonic acid, 2-((2,4-dinitrophenyl)azo)-1-hydroxy
  • 2-((2,4-Dinitrophenyl)azo)-1-naphthol 3,6-disulfonic acid disodium salt
  • 2-(2,4-dinitrophenylazo)-1-naphthol-3,6-disulfonic acid
  • 1-Hydroxy-2-(2,4-dinitrophenylazo)-3,6-naphthalenedisulfonic acid
  • 3-((2,4-Dinitrophenyl)azo)-4-hydroxy-2,7-naphthalenedisulfonic acid
  • 2,7-Naphthalenedisulfonic acid, 3-((2,4-dinitrophenyl)azo)-4-hydroxy-
  • 3-(2-(2,4-Dinitrophenyl)diazenyl)-4-hydroxy-2,7-naphthalenedisulfonic acid

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
498.41 g/molcalc.
Exact mass
497.9787 Dacalc.
LogP (octanol/water)
3.27calc.
Topological polar surface area
240 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
11calc.
Rotatable bonds
6calc.
Heavy atoms
33calc.
Rings
3calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0calc.
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, c1ccc(N=Nc2ccc3ccccc3c2)cc1

c1ccc(N=Nc2ccc3ccccc3c2)cc1

3 rings, 18 atoms, the Diazene, 2-naphthalenylphenyl- ring system.

600 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.

Dnpns suppliers

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

No supplier listings yet

Post one free request and suppliers who make or trade Dnpns can send you quotes. Your contact details stay private until you accept a quote.

Request quotesSell this chemical

Dnpns price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

Get latest price

Uses and applications

What the substance is used for, by industry and function

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 Dnpns is traded under.

HS 2927.00Indicative HS code

Diazo-, azo- or azoxy compounds

World exports in 2024
$571M
+6.1% vs 2023, imports $525M
2019 to 2024
Top exporters
  1. China47.0%
  2. Indonesia13.1%
  3. Japan9.3%
Top importers
  1. United States10.2%
  2. India * partner reported9.1%
  3. South Korea9.1%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Dnpns, based on the data on this page

What is Dnpns?

Dnpns is a chemical substance with the molecular formula C16H10N4O11S2 and a molar mass of 498.41 g/mol. Its CAS registry number is 1716-22-9. The IUPAC name is 3-[(2,4-dinitrophenyl)diazenyl]-4-hydroxynaphthalene-2,7-disulfonic acid.

What is the CAS number of Dnpns?

The CAS registry number of Dnpns is 1716-22-9.

What is the molecular formula and weight of Dnpns?

The molecular formula of Dnpns is C16H10N4O11S2 and its molar mass is 498.41 g/mol.

What is Dnpns used for?

Known uses and roles of Dnpns include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Dnpns hazardous?

No GHS hazard classification for Dnpns 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 Dnpns?

Dnpns is usually classified under HS code 292700 (Diazo-, azo- or azoxy-compounds). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dnpns?

Post a free request on CompoundList and suppliers of Dnpns will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Dnpns?

Suppliers quote Dnpns 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 Dnpns

Get quotes for Dnpns

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Dnpns
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Dnpns with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/dnpns-1716-22-9" title="Dnpns structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Screening compounds or HS code 292700

Price on request
Free quotes, contact stays private
Get quotes