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Screening compounds

Prifemilast

Also known as trans-4-[1-(3-Chlorophenyl)-1,4-dihydro-7-methoxy-2,4-dioxopyrimido[5,4-c]quinolin-3(2H)-yl]cyclohexanecarboxylic acid, Compound i, Cyclohexanecarboxylic acid, 4-[1-(3-chlorophenyl)-1,4-dihydro-7-methoxy-2,4-dioxopyrimido[5,4-c]quinolin-3(2H)-yl]-, trans-

CAS 2545665-41-4Formula C25H22ClN3O5Molar mass 479.92 g/mol
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Prifemilast chemical structure, C25H22ClN3O5, CAS 2545665-41-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
2545665-41-4
Formula
C25H22ClN3O5
Molar mass
479.92 g/mol
HS code
293359
Category
Screening compounds

What is Prifemilast?

Plain description, key identifiers and synonyms

Prifemilast is a chemical substance with the molecular formula C25H22ClN3O5 and a molar mass of 479.92 g/mol. Its CAS registry number is 2545665-41-4. The IUPAC name is 4-[1-(3-chlorophenyl)-7-methoxy-2,4-dioxopyrimido[5,4-c]quinolin-3-yl]cyclohexane-1-carboxylic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4-[1-(3-chlorophenyl)-7-methoxy-2,4-dioxopyrimido[5,4-c]quinolin-3-yl]cyclohexane-1-carboxylic acid
CAS number
2545665-41-4
Molecular formula
C25H22ClN3O5
UNII
GM42QVC7FR
InChIKey
SMGRCNCCYFMFAP-UHFFFAOYSA-N
InChI
InChI=1S/C25H22ClN3O5/c1-34-20-7-3-6-18-21(20)27-13-19-22(18)28(17-5-2-4-15(26)12-17)25(33)29(23(19)30)16-10-8-14(9-11-16)24(31)32/h2-7,12-14,16H,8-11H2,1H3,(H,31,32)
SMILES (canonical and isomeric)
COC1=CC=CC2=C3C(=CN=C21)C(=O)N(C(=O)N3C4=CC(=CC=C4)Cl)C5CCC(CC5)C(=O)O

Synonyms

  • trans-4-[1-(3-Chlorophenyl)-1,4-dihydro-7-methoxy-2,4-dioxopyrimido[5,4-c]quinolin-3(2H)-yl]cyclohexanecarboxylic acid
  • Compound i
  • Cyclohexanecarboxylic acid, 4-[1-(3-chlorophenyl)-1,4-dihydro-7-methoxy-2,4-dioxopyrimido[5,4-c]quinolin-3(2H)-yl]-, trans-
  • trans-4-[1-(3-chlorophenyl)-7-methoxy-2,4-dioxo-1,4-dihydropyrimido[5,4-c]quinolin-3(2H)-yl]cyclohexane-1-carboxylic 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
479.92 g/molcalc.
Exact mass
479.1248 Dacalc.
LogP (octanol/water)
4.18calc.
Topological polar surface area
103.4 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
4calc.
Heavy atoms
34calc.
Rings
5calc.
Aromatic rings
4calc.
Fraction sp3 carbons
0.28calc.
Formal charge
0calc.
Stereocentres
0calc.
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=c1c2cnc3ccccc3c2n(-c2ccccc2)c(=O)n1C1CCCCC1

O=c1c2cnc3ccccc3c2n(-c2ccccc2)c(=O)n1C1CCCCC1

5 rings, 28 atoms.

1 other chemical 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.

Prifemilast suppliers

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Prifemilast 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

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

Frequently asked questions

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

What is Prifemilast?

Prifemilast is a chemical substance with the molecular formula C25H22ClN3O5 and a molar mass of 479.92 g/mol. Its CAS registry number is 2545665-41-4. The IUPAC name is 4-[1-(3-chlorophenyl)-7-methoxy-2,4-dioxopyrimido[5,4-c]quinolin-3-yl]cyclohexane-1-carboxylic acid.

What is the CAS number of Prifemilast?

The CAS registry number of Prifemilast is 2545665-41-4.

What is the molecular formula and weight of Prifemilast?

The molecular formula of Prifemilast is C25H22ClN3O5 and its molar mass is 479.92 g/mol.

What is Prifemilast used for?

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

Is Prifemilast hazardous?

No GHS hazard classification for Prifemilast 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 Prifemilast?

Prifemilast 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 Prifemilast?

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

What is the price of Prifemilast?

Suppliers quote Prifemilast 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

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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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