Janus Green B

健那绿B

Also known as: Janus Green B chloride, 3-(Diethylamino)-7-[[4-(dimethylamino)phenyl]azo]-5-phenylphenazinium Chloride, 3-(Diethylamino)-7-{(E)-[4-(dimethylamino)phenyl]diazenyl}-5-phenylphenazin-5-ium chloride, 8-[[4-(dimethylamino)phenyl]diazenyl]-N,N-diethyl-10-phenylphenazin-10-ium-2-amine chloride, Diazin Green S, Union Green B, Janus Green V, Janus Green B (high purity biological stain), Janus Green B (pure, high purity biological stain), Phenazinium, 3-(diethylamino)-7-[[4-(dimethylamino)phenyl]azo]-5-phenyl-, chloride

Janus Green B (CAS 2869-83-2) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C30H31ClN6 and a molecular weight of 511.060 g/mol. It is also known as Janus Green B chloride, 3-(Diethylamino)-7-[[4-(dimethylamino)phenyl]azo]-5-phenylphenazinium Chloride and 3-(Diethylamino)-7-{(E)-[4-(dimethylamino)phenyl]diazenyl}-5-phenylphenazin-5-ium chloride. Key property: a melting point of 160 °C (dec.)(lit.). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2869-83-2
Jingsj CID: J-6813-8
Molecular Formula: C₃₀H₃₁ClN₆
Chinese Name: 健那绿B
Molecular Weight: 511.060 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	160 °C (dec.)(lit.)
Exact Mass	510.229858
PSA	47.97000
LogP	3.99630
Vapor Pressure	2.6 mm Hg ( 20 °C)
Additional Property	H2O: 1 M hot, clear, colorless

Activity & Biological Data

Additional Information	[1]. LAZAROW A, et al. Studies on the enzymatic basis for the Janus green B staining reaction. J Histochem Cytochem. 1953 Jul;1(4):234-41. [2]. Yack JE. Janus Green B as a rapid, vital stain for peripheral nerves and chordotonal organs in insects. J Neurosci Methods. 1993 Aug;49(1-2):17-22. [3]. Lee BC, et al. Novel threadlike structures (Bonghan ducts) inside lymphatic vessels of rabbits visualized with a Janus Green B staining method. Anat Rec B New Anat. 2005 Sep;286(1):1-7.

Additional Information

[1]. LAZAROW A, et al. Studies on the enzymatic basis for the Janus green B staining reaction. J Histochem Cytochem. 1953 Jul;1(4):234-41. [2]. Yack JE. Janus Green B as a rapid, vital stain for peripheral nerves and chordotonal organs in insects. J Neurosci Methods. 1993 Aug;49(1-2):17-22. [3]. Lee BC, et al. Novel threadlike structures (Bonghan ducts) inside lymphatic vessels of rabbits visualized with a Janus Green B staining method. Anat Rec B New Anat. 2005 Sep;286(1):1-7.

Customs & Trade Information

HS Code	32041900

Frequently Asked Questions

What is the CAS number of Janus Green B?

The CAS number of Janus Green B is 2869-83-2.

What are the molecular formula and molecular weight of Janus Green B?

Janus Green B has molecular formula C30H31ClN6 and molecular weight 511.060 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Janus Green B (CAS 2869-83-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6813-8 (accessed 2026-10-28).

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