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3,3'-Diethylthiacarbocyanine iodide

Also known as: DiSC2(3), 3-Ethyl-2-[3-(3-ethyl-2(3H)-benzothiazolylidene)-1-propen-1-yl]benzothiazolium iodide, 3-Ethyl-2-((1E,3Z)-3-(3-ethylbenzo[d]thiazol-2(3H)-ylidene)prop-1-en-1-yl)benzo[d]thiazol-3-ium iodide, Thiacarbocyanine iodide, 3,3'-diethyl-, MFCD00011956

3,3'-Diethylthiacarbocyanine iodide (CAS 905-97-5) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C21H21IN2S2 and a molecular weight of 492.43900 g/mol. Key property: a melting point of 268-270ºC (dec.)(lit.). It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
905-97-5
Jingsj CID
J-17812-1
Molecular Formula
C21H21IN2S2
Molecular Weight
492.43900 g/mol
Category
Organohalogen Compounds
Last updated
8/21/2026
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Physicochemical Properties

Melting Point268-270ºC (dec.)(lit.)
Exact Mass492.01900
PSA65.29000
LogP2.02380

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Activity & Biological Data

Additional Information[1]. NK Petrov, et al. The effect of cucurbit[7]uril on photophysical properties of aqueous solution of 3,3′-diethylthiacarbocyanine iodide dye. Chemical Physics Letters. 2009, 96-99. [2]. M Y. Anikovsky, et al. Complex formation between 3;3´-diethylthiacarbocyanine iodide and DNA and its investigation in aqueous solution. International Journal of Photoenergy. 1999.

Frequently Asked Questions

What is the CAS number of 3,3'-Diethylthiacarbocyanine iodide?

The CAS number of 3,3'-Diethylthiacarbocyanine iodide is 905-97-5.

What are the molecular formula and molecular weight of 3,3'-Diethylthiacarbocyanine iodide?

3,3'-Diethylthiacarbocyanine iodide has molecular formula C21H21IN2S2 and molecular weight 492.43900 g/mol.

Is 3,3'-Diethylthiacarbocyanine iodide hazardous?

3,3'-Diethylthiacarbocyanine iodide has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of 3,3'-Diethylthiacarbocyanine iodide?

For 3,3'-Diethylthiacarbocyanine iodide, Upstream Products: 3-Ethyl-2-methylbenzothiazolium iodide, N,N-Dimethylformamide, Quinazoline, 3-oxide.

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

Last updated:

How to cite: Jingsj. "3,3'-Diethylthiacarbocyanine iodide (CAS 905-97-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-17812-1 (accessed 2026-11-09).

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