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1,1'-Diethyl-2,2'-cyanine iodide

Also known as: 1,1'-Diethyl-2,2'-cyanine iodide, DECYNIUM 22, DIETHYLCYANINE IODIDE, EASTMAN 7851, 1-ethyl-2-[(1-ethyl-2(1H)-quinolylidene)methyl]quinolinium iodide, Pseudocyanine iodide

1,1'-Diethyl-2,2'-cyanine iodide (CAS 977-96-8) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C23H23IN2 and a molecular weight of 454.34700 g/mol. Key property: a melting point of 273ºC. It is classified under GHS with signal word Danger and hazard statements H300, H330 — Fatal if inhaled and H312 — Harmful in contact with skin. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
977-96-8
Jingsj CID
J-43692-0
Molecular Formula
C23H23IN2
Molecular Weight
454.34700 g/mol
Category
Organohalogen Compounds
Last updated
8/21/2026
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Physicochemical Properties

Melting Point273ºC
Exact Mass454.09100
PSA8.81000
LogP1.23570

GHS Safety & Compliance

Acute ToxicitySignal word: Danger
  • H300
  • H330 — Fatal if inhaled
  • H312 — Harmful in contact with skin
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Activity & Biological Data

Additional Information[1]. Fraser-Spears R, et al. Comparative analysis of novel decynium-22 analogs to inhibit transport by the low-affinity, high-capacity monoamine transporters, organic cation transporters 2 and 3, and plasma membrane monoamine transporter. Eur J Pharmacol. 2019 Jan 5;842:351-364.

Frequently Asked Questions

What is the CAS number of 1,1'-Diethyl-2,2'-cyanine iodide?

The CAS number of 1,1'-Diethyl-2,2'-cyanine iodide is 977-96-8.

What are the molecular formula and molecular weight of 1,1'-Diethyl-2,2'-cyanine iodide?

1,1'-Diethyl-2,2'-cyanine iodide has molecular formula C23H23IN2 and molecular weight 454.34700 g/mol.

Is 1,1'-Diethyl-2,2'-cyanine iodide hazardous?

1,1'-Diethyl-2,2'-cyanine iodide has GHS signal word Danger and hazard statements H300; H330 — Fatal if inhaled; H312 — Harmful in contact with skin.

What are the upstream and downstream products of 1,1'-Diethyl-2,2'-cyanine iodide?

For 1,1'-Diethyl-2,2'-cyanine iodide, Upstream Products: 1-Ethyl-2-methylquinolinium iodide.

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

Last updated:

How to cite: Jingsj. "1,1'-Diethyl-2,2'-cyanine iodide (CAS 977-96-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-43692-0 (accessed 2026-11-09).

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