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Heterocyclic building blocks

Oteracil

Also known as Oxonic Acid, 5-azaorotic acid, Allantoxanic acid

CAS 937-13-3Formula C4H3N3O4Molar mass 157.09 g/mol
8 suppliers listed
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Oteracil chemical structure, C4H3N3O4, CAS 937-13-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
937-13-3
Formula
C4H3N3O4
Molar mass
157.09 g/mol
HS code
293369
Category
Heterocyclic building blocks

What is Oteracil?

Plain description, key identifiers and synonyms

5-azaorotic acid is a monocarboxylic acid and a member of 1,3,5-triazines.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4,6-dioxo-1H-1,3,5-triazine-2-carboxylic acid
CAS number
937-13-3 CAS number cross-checked
Molecular formula
C4H3N3O4
UNII
5VT6420TIG
InChIKey
RYYCJUAHISIHTL-UHFFFAOYSA-N
InChI
InChI=1S/C4H3N3O4/c8-2(9)1-5-3(10)7-4(11)6-1/h(H,8,9)(H2,5,6,7,10,11)
SMILES (canonical and isomeric)
C1(=NC(=O)NC(=O)N1)C(=O)O

Synonyms

  • Oxonic Acid
  • 5-azaorotic acid
  • Allantoxanic acid
  • 4,6-dioxo-1,4,5,6-tetrahydro-1,3,5-triazine-2-carboxylic acid
  • oteracilo
  • 1,3,5-Triazine-2-carboxylic acid, 1,4,5,6-tetrahydro-4,6-dioxo-
  • 1,4,5,6-tetrahydro-4,6-dioxo-s-triazine-2-carboxylic acid
  • oteracilum
  • 4,6-dioxo-1H-1,3,5-triazine-2-carboxylic acid
  • Oxonate
  • 1,4,5,6-tetrahydro-4,6-dioxo-1,3,5-triazine-2-carboxylic acid
  • Oxonsaure
  • oxonic-acid
  • dihydroxy-1,3,5-triazine-2-carboxylic acid
  • S-Triazine-2,4-dione-6-carboxylic acid
  • 4,6-dihydroxy-1,3,5-triazine-2-carboxylic acid
  • 4,6-dioxo-1,4,5,6-tetrahydro-1,3,5-triazine-2-carboxylicacid

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
157.09 g/molcalc.
Exact mass
157.0124 Dacalc.
LogP (octanol/water)
-1.84calc.
Topological polar surface area
115.9 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
1calc.
Heavy atoms
11calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0calc.
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=c1nc[nH]c(=O)[nH]1

O=c1nc[nH]c(=O)[nH]1

1 ring, 8 atoms, the 1,3,5-Triazine-2,4(1H,3H)-dione ring system.

98 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.

Oteracil suppliers

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

All 8 suppliers
8 of 8 offers
  • Achemo Scientific Limited
    China, KowloonUnclaimed profile
    OteracilGrade, purity and minimum order on request
    Price on request
    View
  • Ambinter
    France, OrleansUnclaimed profile
    OteracilGrade, purity and minimum order on request
    Price on request
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  • Apexmol
    China, ChongqingUnclaimed profile
    OteracilGrade, purity and minimum order on request
    Price on request
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  • BioChemPartner
    China, ShangHaiUnclaimed profile
    OteracilGrade, purity and minimum order on request
    Price on request
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  • Debye Scientific Co., Ltd.
    Hong Kong, Hong KongUnclaimed profile
    OteracilGrade, purity and minimum order on request
    Price on request
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  • DempoChem
    Netherlands, RotterdamUnclaimed profile
    OteracilGrade, purity and minimum order on request
    Price on request
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  • Hairui Chemical
    China, HangzhouUnclaimed profile
    OteracilGrade, purity and minimum order on request
    Price on request
    View
  • Synblock Inc
    Canada, MontrealUnclaimed profile
    OteracilGrade, purity and minimum order on request
    Price on request
    View

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

8 suppliers in 5 countries

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Oteracil price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Roles

  • antineoplastic agent
  • pharmaceutical
  • protective agent
  • renoprotective agent

Pharmacology

Oteracil is a modulator of 5-fluorouracil (5-FU) activity and inhibitor of the enzyme orotate phosphoribosyl-transferase (OPRT), with chemoprotective activity. Oteracil preferentially localizes in the gastrointestinal (GI) tract where it inhibits OPRT, thereby decreasing metabolism of 5-FU into its active metabolite 5-fluorouridine-5'-monophosphate (FUMP). This decreases activated 5-FU-related gastrointestinal toxicity.

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 Oteracil is traded under.

HS 2933.69Indicative HS code

Compounds containing an unfused triazine ring (whether or not hydrogenated) in the…

World exports in 2024
$2.46B
+1.8% vs 2023, imports $2.44B
2019 to 2024
Top exporters
  1. China53.6%
  2. Germany11.5%
  3. India * partner reported8.4%
Top importers
  1. United States13.5%
  2. Brazil9.6%
  3. Germany9.5%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Oteracil?

5-azaorotic acid is a monocarboxylic acid and a member of 1,3,5-triazines.

What is the CAS number of Oteracil?

The CAS registry number of Oteracil is 937-13-3.

What is the molecular formula and weight of Oteracil?

The molecular formula of Oteracil is C4H3N3O4 and its molar mass is 157.09 g/mol.

What is Oteracil used for?

Known uses and roles of Oteracil include building blocks in research and laboratory, screening compounds in research and laboratory, antineoplastic agent, pharmaceutical, protective agent and 1 more.

Is Oteracil hazardous?

No GHS hazard classification for Oteracil 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 Oteracil?

Oteracil is usually classified under HS code 293369 (Compounds containing an unfused triazine ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Oteracil?

CompoundList lists 8 suppliers of Oteracil in China, Canada, France, Hong Kong and 1 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Oteracil?

Suppliers quote Oteracil 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 Oteracil

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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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