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Heterocyclic building blocks

Propidium iodide

Also known as Propidium diiodide, 3,8-Diamino-5-(3-(diethylmethylammonio)propyl)-6-phenylphenanthridinium diiodide, 3,8-Diamino-5-[3-(diethylmethylammonio)propyl]-6-phenylphenanthridinium diiodide

CAS 25535-16-4Formula C27H34I2N4Molar mass 668.41 g/molEC 247-081-0
GHS signal word: Warning. Pictograms: Harmful or irritant, Serious health hazard 76 suppliers listed
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Propidium iodide chemical structure, C27H34I2N4, CAS 25535-16-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
25535-16-4
Formula
C27H34I2N4
Molar mass
668.41 g/mol
EC number
247-081-0
HS code
293399
Category
Heterocyclic building blocks

What is Propidium iodide?

Plain description, key identifiers and synonyms

Propidium iodide is an organic iodide salt. It contains a propidium.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-(3,8-diamino-6-phenylphenanthridin-5-ium-5-yl)propyl-diethyl-methylazanium diiodide
CAS number
25535-16-4 CAS number cross-checked
EC number
247-081-0
Molecular formula
C27H34I2N4
UNII
TP416O228T
MDL number
MFCD00011921
InChIKey
XJMOSONTPMZWPB-UHFFFAOYSA-M
InChI
InChI=1S/C27H33N4.2HI/c1-4-31(3,5-2)17-9-16-30-26-19-22(29)13-15-24(26)23-14-12-21(28)18-25(23)27(30)20-10-7-6-8-11-20;;/h6-8,10-15,18-19,29H,4-5,9,16-17,28H2,1-3H3;2*1H/q+1;;/p-1
SMILES (canonical and isomeric)
CC[N+](C)(CC)CCC[N+]1=C2C=C(C=CC2=C3C=CC(=CC3=C1C4=CC=CC=C4)N)N.[I-].[I-]

Synonyms

  • Propidium diiodide
  • 3,8-Diamino-5-(3-(diethylmethylammonio)propyl)-6-phenylphenanthridinium diiodide
  • 3,8-Diamino-5-[3-(diethylmethylammonio)propyl]-6-phenylphenanthridinium diiodide
  • Phenanthridinium, 3,8-diamino-5-(3-(diethylmethylammonio)propyl)-6-phenyl-, diiodide
  • Diiodide, Propidium
  • Iodide, Propidium
  • Propidiumiodide
  • 3,8-Diamino-5-(3-(diethyl(methyl)ammonio)propyl)-6-phenylphenanthridin-5-ium iodide
  • Propidium (Iodide)
  • 3-(3,8-diamino-6-phenylphenanthridin-5-ium-5-yl)propyl-diethyl-methylazanium diiodide
  • Propidium Iodine
  • 3,8-Diamino-5-(3-diethylaminopropyl)-6-phenylphenanthridinium iodide methiodide
  • 2,7-Diamino-9-phenyl-10 (diethylaminopropyl)-phenanthridium iodide methiodide
  • 3-(3,8-diamino-6-phenylphenanthridin-5-ium-5-yl)propyl-diethyl-methylazanium, diiodide
  • 3,8-Diamino-5-[3-[diethyl(methyl)ammonio]propyl]-6-phenylphenanthridin-5-ium Iodide
  • Propidium Iodide?
  • Propidium iodide (PI)
  • Propidium iodide pound PI pound(c)
  • Propidium Iodide solution assay reagent
  • Propidium iodide solution ((1.0 mg/ml in water))
  • Propidium Iodide Staining Solution (1mg/ml) in water
  • 3,8-Diamino-5-(3-(diethylmethylammonio)propyl)-6-phenylphena
  • 3,8-Diamino-5-(3-(diethyl(methyl)ammonio)propyl)-6-phenylphenanthridin-5-iumiodide
  • 3,8-Diamino-5-[3-(diethylmethylammonio)propyl]-6-phenyl-phenanthridinium, diiodide
  • 3,8-diamino-5-{3-[diethyl(methyl)ammonio]propyl}-6-phenylphenanthridinium diiodide
Show all 28 synonyms
  • 3,8-diamino-5-{3-[diethyl(methyl)azaniumyl]propyl}-6-phenylphenanthridin-5-ium diiodide
  • 3-(3,8-diamino-6-phenylphenanthridin-5-ium-5-yl)propyl-diethyl-methylazanium, iodide
  • 2,7-Diamino-9-phenyl-10 (diethylaminopropyl)-phenanthridium iodide methiodide aqueous solution

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
668.41 g/molcalc.
Exact mass
668.0873 Dacalc.
LogP (octanol/water)
-1calc.
Topological polar surface area
55.92 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
7calc.
Heavy atoms
33calc.
Rings
4calc.
Aromatic rings
4calc.
Fraction sp3 carbons
0.3calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
3calc.
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(-c2nc3ccccc3c3ccccc23)cc1

c1ccc(-c2nc3ccccc3c3ccccc23)cc1

4 rings, 20 atoms, the Phenanthridine, 6-phenyl- ring system.

122 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
  • H341Suspected of causing genetic defects.
Precautionary statements (18)
  • P203Obtain, read and follow all safety instructions before use.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P318If exposed or concerned, get medical advice.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • 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

Propidium iodide suppliers

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All 76 suppliers
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Where suppliers are based

76 suppliers in 14 countries

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Propidium iodide 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

Pharmacology

Propidium Iodide is a fluorescent nucleic acid dye which binds only to double-stranded nucleic acids. It has a molecular weight of 668.4, an absorbance maximum of 535nm, and an emission maximum of 617 nm. It is commonly used to determine the DNA content of a cell or to discriminate viable from non-viable cells.

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 Propidium iodide is traded under.

HS 2933.99Indicative HS code

Heterocyclic compounds with nitrogen hetero-atom(s) only, other

World exports in 2024
$12.1B
−31.0% vs 2023, imports $28.8B
2019 to 2024
Top exporters
  1. China30.5%
  2. India * partner reported16.3%
  3. Ireland9.0%
Top importers
  1. Slovenia31.7%
  2. Italy24.2%
  3. United States5.0%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Propidium iodide, based on the data on this page

What is Propidium iodide?

Propidium iodide is an organic iodide salt. It contains a propidium.

What is the CAS number of Propidium iodide?

The CAS registry number of Propidium iodide is 25535-16-4.

What is the molecular formula and weight of Propidium iodide?

The molecular formula of Propidium iodide is C27H34I2N4 and its molar mass is 668.41 g/mol.

What is Propidium iodide used for?

Known uses and roles of Propidium iodide include building blocks in research and laboratory.

Is Propidium iodide hazardous?

Propidium iodide carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Propidium iodide?

Propidium iodide is usually classified under HS code 293399 (Heterocyclic compounds with nitrogen hetero-atom(s) only, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Propidium iodide?

CompoundList lists 76 suppliers of Propidium iodide in United States, China, United Kingdom, Germany and 10 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Propidium iodide in India?

1 supplier in India list Propidium iodide on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Propidium iodide?

Suppliers quote Propidium iodide 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 Propidium iodide

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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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