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Fluorescent dyes and stains

Hydroethidine

Also known as Reduced ethidium, 5,6-Dihydro-3,8-diamino-5-ethyl-6-phenylphenanthridine, 5-ethyl-6-phenyl-5,6-dihydrobenzo[h]isoquinoline-4,8-diamine

CAS 38483-26-0Formula C21H21N3Molar mass 315.42 g/mol
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Hydroethidine chemical structure, C21H21N3, CAS 38483-26-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
38483-26-0
Formula
C21H21N3
Molar mass
315.42 g/mol
HS code
293399
Category
Fluorescent dyes and stains

What is Hydroethidine?

Plain description, key identifiers and synonyms

Hydroethidine is a chemical substance with the molecular formula C21H21N3 and a molar mass of 315.42 g/mol. Its CAS registry number is 38483-26-0. The IUPAC name is 5-ethyl-6-phenyl-5,6-dihydrobenzo[h]isoquinoline-4,8-diamine.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
5-ethyl-6-phenyl-5,6-dihydrobenzo[h]isoquinoline-4,8-diamine
CAS number
38483-26-0 CAS number cross-checked
Molecular formula
C21H21N3
InChIKey
ZDWPSSBKIMIPMY-UHFFFAOYSA-N
InChI
InChI=1S/C21H21N3/c1-2-15-20(13-6-4-3-5-7-13)17-10-14(22)8-9-16(17)18-11-24-12-19(23)21(15)18/h3-12,15,20H,2,22-23H2,1H3
SMILES (canonical and isomeric)
CCC1C(C2=C(C=CC(=C2)N)C3=CN=CC(=C13)N)C4=CC=CC=C4

Synonyms

  • Reduced ethidium
  • 5,6-Dihydro-3,8-diamino-5-ethyl-6-phenylphenanthridine
  • 5-ethyl-6-phenyl-5,6-dihydrobenzo[h]isoquinoline-4,8-diamine
  • 3,8-Diamino-5,6-dihydro-5-ethyl-6-phenylphenanthridine
  • Phenanthridine, 5,6-dihydro-3,8-diamino-5-ethyl-6-phenyl-

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
315.42 g/molcalc.
Exact mass
315.1735 Dacalc.
LogP (octanol/water)
4.55calc.
Topological polar surface area
64.93 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
2calc.
Heavy atoms
24calc.
Rings
4calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0.19calc.
Formal charge
0calc.
Stereocentres
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, c1ccc(C2Cc3ccncc3-c3ccccc32)cc1

c1ccc(C2Cc3ccncc3-c3ccccc32)cc1

4 rings, 20 atoms.

No other chemical in our database has 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.

Hydroethidine suppliers

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

No supplier listings yet

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Hydroethidine 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.

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Uses and applications

What the substance is used for, by industry and function

Pharmacological actions

  • Fluorescent Dyes

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 Hydroethidine 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 Hydroethidine is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Hydroethidine?

Hydroethidine is a chemical substance with the molecular formula C21H21N3 and a molar mass of 315.42 g/mol. Its CAS registry number is 38483-26-0. The IUPAC name is 5-ethyl-6-phenyl-5,6-dihydrobenzo[h]isoquinoline-4,8-diamine.

What is the CAS number of Hydroethidine?

The CAS registry number of Hydroethidine is 38483-26-0.

What is the molecular formula and weight of Hydroethidine?

The molecular formula of Hydroethidine is C21H21N3 and its molar mass is 315.42 g/mol.

What is Hydroethidine used for?

Known uses and roles of Hydroethidine include fluorescent dyes.

Is Hydroethidine hazardous?

No GHS hazard classification for Hydroethidine 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 Hydroethidine?

Hydroethidine 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 Hydroethidine?

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

What is the price of Hydroethidine?

Suppliers quote Hydroethidine 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 Hydroethidine

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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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