FREE shipping to on qualifying orders when you spend or more, processed by Ossila BV. All prices ex. VAT. Qualifying orders ship free worldwide! Fast, secure, and backed by the Ossila guarantee. It looks like you are visiting from , click to shop in or change country. Orders to the EU are processed by our EU subsidiary.

It looks like you are using an unsupported browser. You can still place orders by emailing us on info@ossila.com, but you may experience issues browsing our website. Please consider upgrading to a modern browser for better security and an improved browsing experience.


Product Code B431-500mg
Price $375 ex. VAT

Quality assured

Expert support

Volume discounts

Worldwide shipping

Fast and secure


High-purity synthesis intermediate

Has been used in tandem organic solar cells applications


2,6-Bis(trimethylstannyl)-4,8-bis(5-(tripropylsilyl)thiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene, also referred to as BDT-Th(TPS)-Sn, has been used for the synthesis of J61 and J71 in the application of tandem organic solar cells.

General Information

CAS Number 2035466-88-5
Chemical Formula C42H66S4Si2Sn2
Molecular Weight 992.82 g/mol
Synonyms 2,6-Bis(trimethylstannyl)-4,8-bis(5-(tripropylsilyl)thiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene
Classification / Family Thiophene, Fused thiophene, Semiconductor synthesis intermediates, Low band-gap polymers, OFETs, Organic photovoltaics, polymer solar cells

Chemical Structure

BDT-TPSTh, 2035466-88-5,  2,6-bis(trimethyltin)-(4,8-bis(5-(tripropylsilyl)thiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene)
Chemical structure of BDT-Th(TPS)-Sn, CAS 2035466-88-5

Product Details

Purity >98% (by 1H NMR in CDCl3)
Melting Point N/A
Appearance White powder/crystals

MSDS Documentation

BDT-Th(TPS)-Sn MSDSBDT-Th(TPS)-Sn MSDS Sheet

Literature and Reviews

  1. 11.4% Efficiency non-fullerene polymer solar cells with trialkylsilyl substituted 2D-conjugated polymer as donor, H. Bin et al., Nat. Commun., 7:13651 (2016); DOI: 10.1038/ncomms13651.

To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

Return to the top