trans-2,3-Dibromo-2-butene-1,4-diol, 97%

About trans-2,3-Dibromo-2-butene-1,4-diol, 97%

trans-2,3-Dibromo-2-butene-1,4-diol is an alcohol building block carrying the CAS registry number 21285-46-1 with a typical assay of 97%. The compound has the formula C4H6Br2O2, corresponding to a molecular weight of 245.9 g/mol. The IUPAC name is (E)-2,3-dibromobut-2-ene-1,4-diol. It is also known as trans-2,3-Dibromo-1,4-dihydroxy-2-butene or (2E)-2,3-dibromobut-2-ene-1,4-diol.

It is supplied as white to orange to green powder or crystals. Reported physical data include a melting point of 112-114 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

Typical applications include organic synthesis and API synthesis. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

We offer trans-2,3-Dibromo-2-butene-1,4-diol in 25 g, 500 g and 5 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	trans-2,3-Dibromo-2-butene-1,4-diol, 97%
Catalogue No.	VQ-010097
CAS Number	21285-46-1
IUPAC name	(E)-2,3-dibromobut-2-ene-1,4-diol
Molecular formula	C₄H₆Br₂O₂
Molecular weight	245.9 g/mol
Exact mass	245.8714
Purity / assay	97%
HSN code	29051990
InChIKey	MELXIJRBKWTTJH-ONEGZZNKSA-N
SMILES	C(/C(=C(/CO)\Br)/Br)O
PubChem CID	641240

Physical properties
Physical form	Crystalline
Appearance	White to orange to green powder or crystals
Melting point	112-114 °C
LogP (XLogP3)	0.1
H-bond donors / acceptors	2 / 2
TPSA	40.5 Å²
Synonyms	trans-2,3-Dibromo-1,4-dihydroxy-2-butene, trans-2,3-Dibromo-2-butene-1,4-diol, (2E)-2,3-dibromobut-2-ene-1,4-diol, 2-butene-1,4-diol, 2,3-dibromo-, (2E)-, (E)-2,3-Dibromo-2-butene-1,4-diol, (2E)-2,3-Dibromo-2-butene-1,4-diol, 2-Butene-1,4-diol, 2,3-dibromo-, 2,3-Dibromo-2-butene-1,4-diol, (E)-, 2-Butene-1,4-diol, 2,3-dibromo-, (E)-, 2,3-Dibromobutene-1,4-diol, 2-Butene-1, 2,3-dibromo-, (E)-2,3-Dibromo-2-butene-1,4

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H317May cause an allergic skin reaction

Precautionary statements: P261, P272, P280, P302 + P352, P321, P333 + P317, P362 + P364, 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 trans-2,3-Dibromo-2-butene-1,4-diol, 97%?

The CAS Registry Number of trans-2,3-Dibromo-2-butene-1,4-diol, 97% is 21285-46-1. It is also known as trans-2,3-Dibromo-1,4-dihydroxy-2-butene, trans-2,3-Dibromo-2-butene-1,4-diol, (2E)-2,3-dibromobut-2-ene-1,4-diol.

What is the molecular formula and molecular weight of trans-2,3-Dibromo-2-butene-1,4-diol, 97%?

trans-2,3-Dibromo-2-butene-1,4-diol, 97% has the molecular formula C4H6Br2O2 and a molecular weight of 245.9 g/mol. Its IUPAC name is (E)-2,3-dibromobut-2-ene-1,4-diol.

Which grade and pack sizes of trans-2,3-Dibromo-2-butene-1,4-diol, 97% can I order?

We supply trans-2,3-Dibromo-2-butene-1,4-diol, 97% in (97%) grade, in 25 g, 500 g, 5 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with trans-2,3-Dibromo-2-butene-1,4-diol, 97%?

Yes. Every lot of trans-2,3-Dibromo-2-butene-1,4-diol, 97% 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 trans-2,3-Dibromo-2-butene-1,4-diol, 97% be shipped internationally?

Yes. trans-2,3-Dibromo-2-butene-1,4-diol, 97% 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.