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Heterocyclic building blocks

Pyrimidine dimer

Also known as pyrimidine phase III, pyrimidine.pyrimidine

CAS 25247-63-6Formula C8H8N4Molar mass 160.18 g/mol
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Pyrimidine dimer chemical structure, C8H8N4, CAS 25247-63-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
25247-63-6
Formula
C8H8N4
Molar mass
160.18 g/mol
HS code
293359
Category
Heterocyclic building blocks

What is Pyrimidine dimer?

Plain description, key identifiers and synonyms

Pyrimidine Dimer is a pair of pyrimidine bases (thymine or cytosine in DNA or uracil in double-stranded RNA) within a nucleic acid covalently linked by a cyclobutane ring, the formation of which was induced by exposure to ultraviolet radiation. The presence of pyrimidine dimers inhibits DNA replication, improper repair of these lesions promotes DNA mutagenesis.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
pyrimidine
CAS number
25247-63-6 CAS number cross-checked
Molecular formula
C8H8N4
InChIKey
YMXFJTUQQVLJEN-UHFFFAOYSA-N
InChI
InChI=1S/2C4H4N2/c2*1-2-5-4-6-3-1/h2*1-4H
SMILES (canonical and isomeric)
C1=CN=CN=C1.C1=CN=CN=C1

Synonyms

  • pyrimidine phase III
  • pyrimidine.pyrimidine

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
160.18 g/molcalc.
Exact mass
160.0749 Dacalc.
LogP (octanol/water)
0.95calc.
Topological polar surface area
51.56 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
0calc.
Heavy atoms
12calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
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, c1cncnc1

c1cncnc1

1 ring, 6 atoms, the Pyrimidine ring system.

18,999 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.

Pyrimidine dimer suppliers

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

Frequently asked questions

Quick answers about Pyrimidine dimer, based on the data on this page

What is Pyrimidine dimer?

Pyrimidine Dimer is a pair of pyrimidine bases (thymine or cytosine in DNA or uracil in double-stranded RNA) within a nucleic acid covalently linked by a cyclobutane ring, the formation of which was induced by exposure to ultraviolet radiation.

What is the CAS number of Pyrimidine dimer?

The CAS registry number of Pyrimidine dimer is 25247-63-6.

What is the molecular formula and weight of Pyrimidine dimer?

The molecular formula of Pyrimidine dimer is C8H8N4 and its molar mass is 160.18 g/mol.

What is Pyrimidine dimer used for?

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

Is Pyrimidine dimer hazardous?

No GHS hazard classification for Pyrimidine dimer 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 Pyrimidine dimer?

Pyrimidine dimer 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 Pyrimidine dimer?

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What is the price of Pyrimidine dimer?

Suppliers quote Pyrimidine dimer 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 Pyrimidine dimer

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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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