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Cryptocyanine

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. Key property: a melting point of 250.5-253 °C(lit.). It is classified under GHS with signal word Danger and hazard statements H300, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4727-50-8
Jingsj CID
J-47130-7
Molecular Formula
C25H25IN2
Molecular Weight
480.384 g/mol
Category
Organic Compounds
Last updated
8/21/2026
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Physicochemical Properties

Melting Point250.5-253 °C(lit.)
Exact Mass480.106232
PSA8.81000
LogP1.90080
Refractive Index1.664

GHS Safety & Compliance

Acute ToxicitySignal word: Danger
  • H300
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2933499090
Summary2933499090. other compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused. 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 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 and hazard statements H300; H315 — Causes skin irritation; H319 — Causes serious eye irritation.

What are the upstream and downstream products of Cryptocyanine?

For Cryptocyanine, Upstream Products: 1-Ethyl-4-methylquinolinium iodide, Formaldehyde, 4-Methylquinoline; Downstream Products: 1,1'-Diethyl-4,4'-cyanine 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. "Cryptocyanine (CAS 4727-50-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47130-7 (accessed 2026-11-09).

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