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Phenols

Moniliformin

Also known as 3-hydroxycyclobut-3-ene-1,2-dione, Semisquaric acid, 3-Cyclobutene-1,2-dione, 3-hydroxy-

CAS 31876-38-7Formula C4H2O3Molar mass 98.06 g/molEC 636-113-2
GHS signal word: Danger. Pictograms: Acute toxicity (severe) 2 suppliers listed
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Moniliformin chemical structure, C4H2O3, CAS 31876-38-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
31876-38-7
Formula
C4H2O3
Molar mass
98.06 g/mol
EC number
636-113-2
HS code
290719
Category
Phenols

What is Moniliformin?

Plain description, key identifiers and synonyms

Moniliformin is an enol and an enone.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-hydroxycyclobut-3-ene-1,2-dione
CAS number
31876-38-7 CAS number cross-checkedOther or deprecated CAS: 1345994-72-0, 39284-13-4, 71376-34-6
EC numbers
636-113-2, 981-476-5
Molecular formula
C4H2O3
UNII
G5JMQ8SDF8
InChIKey
KGPQKNJSZNXOPV-UHFFFAOYSA-N
InChI
InChI=1S/C4H2O3/c5-2-1-3(6)4(2)7/h1,5H
SMILES (canonical and isomeric)
C1=C(C(=O)C1=O)O

Synonyms

  • 3-hydroxycyclobut-3-ene-1,2-dione
  • Semisquaric acid
  • 3-Cyclobutene-1,2-dione, 3-hydroxy-
  • 1-Hydroxycyclobut-1-ene-3,4-dione
  • Hydroxycyclobutenedione
  • 3-Hydroxy-3-cyclobutene-1,2-dione
  • 3-Hydroxy-3-cyclobutenedione
  • 1-Hydroxy-cyclobut-1-ene-3,4-dione
  • 1-hydroxycyclobutene-3,4-dione
  • 4-Hydroxy-3-cyclobutene-1,2-dione-1,4-13C2
  • Moniliformin (sodium salt)
  • Cyclobutenedione, hydroxy-
  • 3-hydroxy-cyclobut-3-ene-1,2-dione
  • 4-Hydroxy-3-cyclobutene-1,2-dione-1,4-
  • Monoliformin 100 microg/mL in Acetonitrile

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
98.06 g/molcalc.
Exact mass
98.0004 Dacalc.
LogP (octanol/water)
-1.01calc.
Topological polar surface area
54.37 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
0calc.
Heavy atoms
7calc.
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=c1ccc1=O

O=c1ccc1=O

1 ring, 6 atoms, the 3-Cyclobutene-1,2-dione ring system.

158 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)

Hazard statements

  • H301Toxic if swallowed.
Precautionary statements (7)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • 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

Moniliformin suppliers

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

All 2 suppliers
  • MicroCombiChem e.K.
    United KingdomUnclaimed profile
    MoniliforminGrade, purity and minimum order on request
    Price on request
    View
  • Leapchem
    China, Hong KongUnclaimed profile
    MoniliforminGrade, 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

2 suppliers in 2 countries

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Moniliformin price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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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 Moniliformin is traded under.

HS 2907.19Indicative HS code

Monophenols, other

World exports in 2024
$671M
+2.2% vs 2023, imports $781M
2019 to 2024
Top exporters
  1. China20.1%
  2. Germany14.4%
  3. Switzerland * partner reported11.1%
Top importers
  1. China16.3%
  2. Germany10.1%
  3. South Korea8.0%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Moniliformin?

Moniliformin is an enol and an enone.

What is the CAS number of Moniliformin?

The CAS registry number of Moniliformin is 31876-38-7. Other or deprecated CAS numbers: 1345994-72-0, 39284-13-4, 71376-34-6.

What is the molecular formula and weight of Moniliformin?

The molecular formula of Moniliformin is C4H2O3 and its molar mass is 98.06 g/mol.

What is Moniliformin used for?

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

Is Moniliformin hazardous?

Moniliformin carries the GHS signal word "Danger". Main hazards: toxic if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Moniliformin?

Moniliformin is usually classified under HS code 290719 (Monophenols, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Moniliformin?

CompoundList lists 2 suppliers of Moniliformin in China and United Kingdom. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Moniliformin?

Suppliers quote Moniliformin 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 Moniliformin

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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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