4,4'-(Dithiodimethylene)dipyridine

Also known as: 1,2-Bis(4-pyridylmethyl)disulfane, Bis(4-pyridylmethyl) disulfide, 4,4'-(DITHIODIMETHYLENE)DIPYRIDINE, Pyridine, 4,4'-[dithiobis(methylene)]bis-, 4-(pyridin-4-ylmethyldisulfanylmethyl)pyridine, 4-[(pyridin-4-ylmethyldisulfanyl)methyl]pyridine, 4-{[(4-pyridinylmethyl)disulfanyl]methyl}pyridine

4,4'-(Dithiodimethylene)dipyridine (CAS 1020-71-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H12N2S2 and a molecular weight of 248.36700 g/mol. Key properties include a boiling point of 422.4ºC at 760mmHg, a density of 1.258g/cm3 and a flash point of 209.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1020-71-9
Jingsj CID: J-1368206-9
Molecular Formula: C₁₂H₁₂N₂S₂
Molecular Weight: 248.36700 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	422.4ºC at 760mmHg
Density	1.258g/cm3
Flash Point	209.3ºC
Exact Mass	248.04400
PSA	76.38000
LogP	3.55820
Refractive Index	1.655

Customs & Trade Information

HS Code	2933399090
Summary	2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 4,4'-(Dithiodimethylene)dipyridine?

The CAS number of 4,4'-(Dithiodimethylene)dipyridine is 1020-71-9.

What are the molecular formula and molecular weight of 4,4'-(Dithiodimethylene)dipyridine?

4,4'-(Dithiodimethylene)dipyridine has molecular formula C12H12N2S2 and molecular weight 248.36700 g/mol.

What are the upstream and downstream products of 4,4'-(Dithiodimethylene)dipyridine?

For 4,4'-(Dithiodimethylene)dipyridine, Upstream Products: 4-(Chloromethyl)pyridine hydrochloride.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "4,4'-(Dithiodimethylene)dipyridine (CAS 1020-71-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1368206-9 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.