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Screening compounds

Quinespar

Also known as N-(4-(((2,4-Diamino-6-quinazolinyl)methyl)amino)benzoyl)aspartic acid diethyl ester, diethyl (2S)-2-[[4-[(2,4-diaminoquinazolin-6-yl)methylamino]benzoyl]amino]butanedioate, L-Aspartic acid, N-(4-(((2,4-diamino-6-quinazolinyl)methyl)amino)benzoyl)-, diethyl ester

CAS 18921-66-9Formula C24H28N6O5Molar mass 480.53 g/mol
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Quinespar chemical structure, C24H28N6O5, CAS 18921-66-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
18921-66-9
Formula
C24H28N6O5
Molar mass
480.53 g/mol
HS code
293359
Category
Screening compounds

What is Quinespar?

Plain description, key identifiers and synonyms

Quinespar is a chemical substance with the molecular formula C24H28N6O5 and a molar mass of 480.53 g/mol. Its CAS registry number is 18921-66-9. The IUPAC name is diethyl (2S)-2-[[4-[(2,4-diaminoquinazolin-6-yl)methylamino]benzoyl]amino]butanedioate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
diethyl (2S)-2-[[4-[(2,4-diaminoquinazolin-6-yl)methylamino]benzoyl]amino]butanedioate
CAS number
18921-66-9 CAS number cross-checked
Molecular formula
C24H28N6O5
InChIKey
MJEKRVFLXCYWPZ-IBGZPJMESA-N
InChI
InChI=1S/C24H28N6O5/c1-3-34-20(31)12-19(23(33)35-4-2)28-22(32)15-6-8-16(9-7-15)27-13-14-5-10-18-17(11-14)21(25)30-24(26)29-18/h5-11,19,27H,3-4,12-13H2,1-2H3,(H,28,32)(H4,25,26,29,30)/t19-/m0/s1
Canonical SMILES
CCOC(=O)CC(NC(=O)c1ccc(NCc2ccc3nc(N)nc(N)c3c2)cc1)C(=O)OCC
Isomeric SMILES
CCOC(=O)C[C@@H](C(=O)OCC)NC(=O)C1=CC=C(C=C1)NCC2=CC3=C(C=C2)N=C(N=C3N)N

Synonyms

  • N-(4-(((2,4-Diamino-6-quinazolinyl)methyl)amino)benzoyl)aspartic acid diethyl ester
  • diethyl (2S)-2-[[4-[(2,4-diaminoquinazolin-6-yl)methylamino]benzoyl]amino]butanedioate
  • L-Aspartic acid, N-(4-(((2,4-diamino-6-quinazolinyl)methyl)amino)benzoyl)-, diethyl ester
  • Diethyl N-(4-{[(2,4-diaminoquinazolin-6-yl)methyl]amino}benzoyl)-L-aspartate

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
480.53 g/molcalc.
Exact mass
480.2121 Dacalc.
LogP (octanol/water)
2.02calc.
Topological polar surface area
171.6 Ųcalc.
Hydrogen bond donors
4calc.
Hydrogen bond acceptors
10calc.
Rotatable bonds
10calc.
Heavy atoms
35calc.
Rings
3calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0.29calc.
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, c1ccc(NCc2ccc3ncncc3c2)cc1

c1ccc(NCc2ccc3ncncc3c2)cc1

3 rings, 18 atoms.

47 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.

Quinespar suppliers

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

Frequently asked questions

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

What is Quinespar?

Quinespar is a chemical substance with the molecular formula C24H28N6O5 and a molar mass of 480.53 g/mol. Its CAS registry number is 18921-66-9. The IUPAC name is diethyl (2S)-2-[[4-[(2,4-diaminoquinazolin-6-yl)methylamino]benzoyl]amino]butanedioate.

What is the CAS number of Quinespar?

The CAS registry number of Quinespar is 18921-66-9.

What is the molecular formula and weight of Quinespar?

The molecular formula of Quinespar is C24H28N6O5 and its molar mass is 480.53 g/mol.

What is Quinespar used for?

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

Is Quinespar hazardous?

No GHS hazard classification for Quinespar 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 Quinespar?

Quinespar 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 Quinespar?

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

What is the price of Quinespar?

Suppliers quote Quinespar 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 Quinespar

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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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