Phlorone

About Phlorone

Phlorone is a carbonyl building block carrying the CAS registry number 137-18-8. Formula C8H8O2, molecular weight 136.15 g/mol. Its systematic (IUPAC) name is 2,5-dimethylcyclohexa-2,5-diene-1,4-dione. Common synonyms include 2,5-Dimethyl-1,4-benzoquinone and 2,5-Dimethyl-p-benzoquinone.

Store in a tightly closed container in a cool, dry and well-ventilated place. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

It is commonly used for organic synthesis, condensation and reductive amination and API intermediates. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Available in 100 mg, 250 mg, 1 g and 5 g packs, Phlorone is dispatched with a Certificate of Analysis (COA) to destinations worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request. Larger quantities and custom packaging are available. Request a quote for pricing and lead time.

Typical applications

Organic synthesis
Condensation & reductive amination
API intermediates

Industries

Specifications & identifiers

Chemical identifiers
Product name	Phlorone
Catalogue No.	VQ-051321
CAS Number	137-18-8
IUPAC name	2,5-dimethylcyclohexa-2,5-diene-1,4-dione
Molecular formula	C₈H₈O₂
Molecular weight	136.15 g/mol
Exact mass	136.0524
InChIKey	MYKLQMNSFPAPLZ-UHFFFAOYSA-N
SMILES	CC1=CC(=O)C(=CC1=O)C
PubChem CID	8718

Physical properties
Physical form	Other
LogP (XLogP3)	1.3
H-bond donors / acceptors	0 / 2
TPSA	34.1 Å²
Synonyms	2,5-Dimethyl-1,4-benzoquinone, 2,5-Dimethyl-p-benzoquinone, 2,5-Cyclohexadiene-1,4-dione, 2,5-dimethyl-, 2,5-Xyloquinone, 2,5-Dimethylquinone, 3,6-Dimethyl-p-benzoquinone, 2,5-Dimethyl-2,5-cyclohexadiene-1,4-dione, 2,5-Dimethyl-4-benzoquinone, 2,5-Dimethyl-p-quinone, p-BENZOQUINONE, 2,5-DIMETHYL-, 2,5-Dimethyl-1,4-benzochinon, 2,5-Dimetilbenzochinone (1:4)

Safety & hazard information (GHS)

Toxic

Harmful / irritant

Signal word: Danger

Hazard statements

H301Toxic if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P270, P271, P280, P301 + P316, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Phlorone?

The CAS Registry Number of Phlorone is 137-18-8. It is also known as 2,5-Dimethyl-1,4-benzoquinone, 2,5-Dimethyl-p-benzoquinone, 2,5-Cyclohexadiene-1,4-dione, 2,5-dimethyl-.

What is the molecular formula and molecular weight of Phlorone?

Phlorone has the molecular formula C8H8O2 and a molecular weight of 136.15 g/mol. Its IUPAC name is 2,5-dimethylcyclohexa-2,5-diene-1,4-dione.

Which grade and pack sizes of Phlorone can I order?

We supply Phlorone, in 100 mg, 250 mg, 1 g, 5 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Phlorone?

Yes. Every lot of Phlorone is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Phlorone be shipped internationally?

Yes. Phlorone is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.