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CAS 33203-82-6

CAS 33203-82-6 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 33203-82-6
CAS 33203-82-6PubChem CID 118408

C.I. Basic Blue 3

IUPAC name
[7-(diethylamino)phenoxazin-3-ylidene]-diethylazanium chloride
Molecular formula
C20H26ClN3O
Molecular weight
359.9 g/mol
Exact mass
359.1764402 Da
Topological polar surface area
27.8 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
4
Covalent units
2
Defined stereocentres
0

Also known as

Basic Blue 3CCRIS 24493,7-Bis(diethylamino)phenoxazin-5-ium chlorideEINECS 251-403-5NSC 409100Phenoxazin-5-ium, 3,7-bis(diethylamino)-, chloride (1:1)UNII-H82L80329YLOWACRYL BLUE 3
16 more reported names
H82L80329YNSC-4091007-(N,N-Diethylamino)phenoxazine-3-N,N-diethyliminium chloride3,7-BIS(DIETHYLAMINO)PHENOXAZONIUM CHLORIDEDIETHYL(7-DIETHYLAMINO-3H-PHENOXAZIN-3-YLIDENE)AMMONIUM CHLORIDEAMMONIUM, (7-(DIETHYLAMINO)-3H-PHENOXAZIN-3-YLIDENE)DIETHYL-, CHLORIDE6703-67-9RefChem:122486BASIC BLUE 3 [INCI]611-321-6614-016-6BASICBLUE3Phenoxazin-5-ium, 3,7-bis(diethylamino)-, chloride[7-(diethylamino)phenoxazin-3-ylidene]-diethylazanium;chlorideEthanaminium, N-(7-(diethylamino)-3H-phenoxazin-3-ylidene)-N-ethyl-, chlorideBasic Blue BG
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 33203-82-6

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How CAS 33203-82-6 is used on this site

CAS 33203-82-6 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 33203-82-6 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.