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Pharmaceuticals and APIs

Epsiprantel

Also known as Cestex, Epsiprantelum, Pyrazino[2,1-a][2]benzazepin-4(1H)-one, 2-(cyclohexylcarbonyl)-2,3,6,7,8,12b-hexahydro-

CAS 98123-83-2Formula C20H26N2O2Molar mass 326.44 g/molEC 869-331-3
GHS signal word: Warning. Pictograms: Harmful or irritant 1 supplier listed Drug substance
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Epsiprantel chemical structure, C20H26N2O2, CAS 98123-83-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
98123-83-2
Formula
C20H26N2O2
Molar mass
326.44 g/mol
EC number
869-331-3
HS code
293359
Category
Pharmaceuticals and APIs

What is Epsiprantel?

Plain description, key identifiers and synonyms

Epsiprantel is a chemical substance with the molecular formula C20H26N2O2 and a molar mass of 326.44 g/mol. Its CAS registry number is 98123-83-2. The IUPAC name is 2-(cyclohexanecarbonyl)-1,3,6,7,8,12b-hexahydropyrazino[2,1-a][2]benzazepin-4-one.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-(cyclohexanecarbonyl)-1,3,6,7,8,12b-hexahydropyrazino[2,1-a][2]benzazepin-4-one
CAS number
98123-83-2 CAS number cross-checkedOther or deprecated CAS: 98123-66-1, 98123-67-2
EC number
869-331-3
Molecular formula
C20H26N2O2
UNII
0C1SPQ0FSR, JU2X6K5BL3, WUC74DW9SN
InChIKey
LGUDKOQUWIHXOV-UHFFFAOYSA-N
InChI
InChI=1S/C20H26N2O2/c23-19-14-21(20(24)16-8-2-1-3-9-16)13-18-17-11-5-4-7-15(17)10-6-12-22(18)19/h4-5,7,11,16,18H,1-3,6,8-10,12-14H2
SMILES (canonical and isomeric)
C1CCC(CC1)C(=O)N2CC3C4=CC=CC=C4CCCN3C(=O)C2

Synonyms

  • Cestex
  • Epsiprantelum
  • Pyrazino[2,1-a][2]benzazepin-4(1H)-one, 2-(cyclohexylcarbonyl)-2,3,6,7,8,12b-hexahydro-
  • Pyrazino(2,1-a)(2)benzazepin-4(1H)-one, 2-(cyclohexylcarbonyl)-2,3,6,7,8,12b-hexahydro-
  • Epsiprantel, (+)-
  • Epsiprantel, (-)-
  • BRL 38705
  • 2-(cyclohexanecarbonyl)-1,3,6,7,8,12b-hexahydropyrazino[2,1-a][2]benzazepin-4-one
  • Epsiprantel (INN)
  • (+)-2-(Cyclohexylcarbonyl)-2,3,6,7,8,12b-hexahydropyrazino(2,1-a)(2)benzazepin-4(1H)-one
  • (+-)-2-(Cyclohexylcarbonyl)-2,3,6,7,8,12b-hexahydropyrazino(2,1-a)(2)benzazepin-4(1H)-one
  • BRL38705, BRL-38705, BRL 38705
  • Pyrazino(2,1-a)(2)benzazepin-4(1H)-one, 2-(cyclohexylcarbonyl)-2,3,6,7,8,12b-hexahydro-, (+)-
  • (-)-2-(Cyclohexylcarbonyl)-2,3,6,7,8,12b-hexahydropyrazino(2,1-a)(2)benzazepin-4(1H)-one
  • Pyrazino(2,1-a)(2)benzazepin-4(1H)-one, 2-(cyclohexylcarbonyl)-2,3,6,7,8,12b-hexahydro-, (-)-
  • Cestex (TN)
  • Epsiprantel - API Standards
  • 2-(Cyclohexanecarbonyl)-2,3,6,7,8,12b-hexahydropyrazino[2,1-a][2]benzazepin-4(1H)-one
  • (+/-)-2-(Cyclohexylcarbonyl)-2,3,6,7,8,12b-hexahydropyrazino(2,1-a)(2)benzazepin-4(1H)-one
  • 2-Cyclohexylcarbonyl-2,3,6,7,8,12b-hexahydropyrazino(2,1-a)(2)benzazepin-4(1H)-one

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
326.44 g/molcalc.
Exact mass
326.1994 Dacalc.
LogP (octanol/water)
2.93calc.
Topological polar surface area
40.62 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
1calc.
Heavy atoms
24calc.
Rings
4calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.6calc.
Formal charge
0calc.
Stereocentres
1calc.
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=C(C1CCCCC1)N1CC(=O)N2CCCc3ccccc3C2C1

O=C(C1CCCCC1)N1CC(=O)N2CCCc3ccccc3C2C1

4 rings, 24 atoms. This chemical is the scaffold itself.

No other chemical in our database has this scaffold.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
  • H412Harmful to aquatic life with long lasting effects.
Precautionary statements (20)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • 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.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • 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

Epsiprantel suppliers

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Where suppliers are based

1 supplier in 1 country

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Epsiprantel 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

Use classes: Animal Drugs.

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • Active ingredient in FDA approved drug labels

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2933.59Indicative HS code

Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring, other

World exports in 2024
$18.4B
+10.5% vs 2023, imports $24.8B
2019 to 2024
Top exporters
  1. Ireland43.6%
  2. Switzerland * partner reported26.3%
  3. China7.9%
Top importers
  1. Slovenia30.3%
  2. United States30.1%
  3. Germany15.3%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Epsiprantel?

Epsiprantel is a chemical substance with the molecular formula C20H26N2O2 and a molar mass of 326.44 g/mol. Its CAS registry number is 98123-83-2. The IUPAC name is 2-(cyclohexanecarbonyl)-1,3,6,7,8,12b-hexahydropyrazino[2,1-a][2]benzazepin-4-one.

What is the CAS number of Epsiprantel?

The CAS registry number of Epsiprantel is 98123-83-2. Other or deprecated CAS numbers: 98123-66-1, 98123-67-2.

What is the molecular formula and weight of Epsiprantel?

The molecular formula of Epsiprantel is C20H26N2O2 and its molar mass is 326.44 g/mol.

What is Epsiprantel used for?

Use classes: Animal Drugs.

Is Epsiprantel hazardous?

Epsiprantel carries the GHS signal word "Warning". Main hazards: harmful if swallowed, causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Epsiprantel?

Epsiprantel is usually classified under HS code 293359 (Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Epsiprantel?

CompoundList lists 1 supplier of Epsiprantel in Mexico. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Epsiprantel?

Suppliers quote Epsiprantel 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 Epsiprantel

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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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