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CAS RN: 55727-23-6 | Product Number: D4208


Purity: >98.0%(GC)
1   4  
1   5  

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Product Number D4208
Purity / Analysis Method >98.0%(GC)
Molecular Formula / Molecular Weight C__9H__1__2O__2S__2 = 216.31  
Physical State (20 deg.C) Solid
CAS RN 55727-23-6
Reaxys Registry Number 8052948
PubChem Substance ID 160871490
MDL Number


Appearance Light orange to Yellow to Green powder to crystal
Purity(GC) min. 98.0 %
Melting point 101.0 to 105.0 °C
Properties (reference)
Melting Point 103 °C
Related Laws: / Compliance with laws, Regulations
Transport Information:
HS Number 2934999090
An Odorless 1,3-Propanedithiol Equivalent

Typical procedure (Entry 1 : R1 = 4-MeO-Ph, R2 = H ) :
3-(1,3-Dithian-2-ylidene)-2,4-pentanedione 1 (10 mmol), 4-methoxybenzaldehyde (10 mmol), and concd aq HCl (10 mmol) are added to a flask in a water bath. The mixture is heated to 60 °C under stirring. After the reaction is completed, within 15 min as indicated by TLC, the reaction mixture is cooled down to r.t. and neutralized with 10% aq NaHCO3 (10 mL). The solid product is collected by filtration and washed with H2O (3 × 30 mL). Further purification is carried out by silicagel flash column chromatography (petroleum ether/ethyl acetate = 75/1) to give 2-(4-methoxyphenyl)-1,3-dithiane in 97% yield as a white solid.


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