Cryptocyanine

隐花青

Also known as: 1,1'-DIETHYL-4,4'-CARBOCYANINE IODIDE, 1-ETHYL-4-[3-(1-ETHYL-1H-QUINOLIN-4-YLIDENE)-PROPENYL]-QUINOLINIUM IODIDE, Cryptocyanine iodide, Eastman 1334, Kryptocyanine iodide, NK5, NSC 34391, MFCD00011970, EINECS 225-224-8

Cryptocyanine (CAS 4727-50-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C25H25IN2 and a molecular weight of 480.384 g/mol. It is also known as 1,1'-DIETHYL-4,4'-CARBOCYANINE IODIDE, 1-ETHYL-4-[3-(1-ETHYL-1H-QUINOLIN-4-YLIDENE)-PROPENYL]-QUINOLINIUM IODIDE and Cryptocyanine iodide. Key property: a melting point of 250.5-253 °C(lit.). GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4727-50-8
Jingsj CID: J-47130-5
Molecular Formula: C₂₅H₂₅IN₂
Chinese Name: 隐花青
Molecular Weight: 480.384 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	250.5-253 °C(lit.)

GHS Safety & Compliance

Acute ToxicitySignal word: Danger

Frequently Asked Questions

What is the CAS number of Cryptocyanine?

The CAS number of Cryptocyanine is 4727-50-8.

What are the molecular formula and molecular weight of Cryptocyanine?

Cryptocyanine has molecular formula C25H25IN2 and molecular weight 480.384 g/mol.

Is Cryptocyanine hazardous?

Cryptocyanine has GHS signal word Danger.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Cryptocyanine (CAS 4727-50-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47130-5 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.