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CAS 1 record

CAS 1239-45-8

CAS 1239-45-8 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 1239-45-8
CAS 1239-45-8PubChem CID 14710

Ethidium Bromide

Ethidium bromide is the organic bromide salt of ethidium. It has a role as a geroprotector, an intercalator and a trypanocidal drug. It contains an ethidium. — ChEBI

IUPAC name
5-ethyl-6-phenylphenanthridin-5-ium-3,8-diamine bromide
Molecular formula
C21H20BrN3
Molecular weight
394.3 g/mol
Exact mass
393.08406 Da
Topological polar surface area
55.9 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
3
Covalent units
2
Defined stereocentres
0

Also known as

Homidium bromideDromilac3,8-Diamino-5-ethyl-6-phenylphenanthridinium bromideEtBrEthydium bromideBromure d'homidiumBromuro de homidioHomidii bromidum
16 more reported names
2,7-Diamino-10-ethyl-9-phenylphenanthridinium bromide2,7-Diamino-9-phenyl-10-ethylphenanthridinium bromide2,7-Diamino-9-phenylphenanthridine ethobromideNSC-268986RD 1572059NUO2Z1LCHEBI:4883Bromide, EthidiumBromide, HomidiumRefChem:138396214-984-63,8-Diamino-5-ethyl-6-phenylphenanthridin-5-ium bromidePhenanthridinium, 3,8-diamino-5-ethyl-6-phenyl-, bromideEthidium (bromide)Ethidium bromide(EB)Phenanthridinium, 3,8-diamino-5-ethyl-6-phenyl-, bromide (1:1)
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Evidence from additional scientific databases

NIH PubChem PUG-View
Exact identifier match14710

Attributed physical-property, hazard, environmental and use annotations.

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status
SourceResultChecked
NIH PubChem PUG-ViewExact match2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

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 1239-45-8

1 total

How CAS 1239-45-8 is used on this site

CAS 1239-45-8 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 1239-45-8 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.

Frequently asked questions

A substance identified by CAS 1239-45-8 may appear in multiple EU cosmetic regulation annexes when it is subject to different conditions in different contexts. For example, a substance might be restricted under Annex III with specific conditions, and the same CAS might also appear in Annex IV as an approved colorant under separate entry conditions. Each entry must be reviewed individually.

Cross-reference the CAS number against your raw material specification sheets and CoA documents. When a CAS appears in Annex II, verify absence. When it appears in Annex III, verify that concentration limits and product type conditions are met in your formulation. All annex entries sharing this CAS number are listed above.

A CAS number is assigned by the Chemical Abstracts Service (USA) and is globally recognised. An EC number is a European Commission identifier from inventories such as EINECS, ELINCS or the NLP list. Both identifiers may appear in EU cosmetic annex entries. Some substances have both, some have only one, and some older entries may have neither.

The INCI Checker accepts ingredient names, CAS numbers and EC numbers. Check this CAS number directly, then verify the result against supplier specification sheets and every linked annex condition.
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