Hoechst 33258 (trihydrochloride)

赫斯特荧光染料33258

Also known as: Bisbenzimide H 33258 trihydrochloride, Bisbenzimide H 33258, BBIH, HOE 33258, Hoechst 33258, Hoechst Stain, 2'-(4-Hydroxyphenyl)-5-(4-methyl-1-piperazinyl)-2,5'-bi-1H-benzimidazole trihydrochloride, 4-[5-(4-Methyl-1-piperazinyl)-1H,1'H-2,5'-bibenzimidazol-2'-yl]phenol trihydrochloride, p-[5-(4-Methyl-1-piperazinyl)(2,5'-bi-1H-benzimidazol)-2'-yl]phenol trihydrochloride, Bisbenzimide Fluorochrome, Pibenzimol HCl, MFCD00012679

Hoechst 33258 (trihydrochloride) (CAS 23491-45-4) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C25H27Cl3N6O and a molecular weight of 533.880 g/mol. It is also known as Bisbenzimide H 33258 trihydrochloride, Bisbenzimide H 33258 and BBIH. Key properties include a melting point of 314 °C, a boiling point of 643.1ºC at 760mmHg and a flash point of 342.7ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
23491-45-4
Jingsj CID
J-1992937-0
Molecular Formula
C25H27Cl3N6O
Chinese Name
赫斯特荧光染料33258
Molecular Weight
533.880 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point314 °C
Boiling Point643.1ºC at 760mmHg
Flash Point342.7ºC

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of Hoechst 33258 (trihydrochloride)?

The CAS number of Hoechst 33258 (trihydrochloride) is 23491-45-4.

What are the molecular formula and molecular weight of Hoechst 33258 (trihydrochloride)?

Hoechst 33258 (trihydrochloride) has molecular formula C25H27Cl3N6O and molecular weight 533.880 g/mol.

Is Hoechst 33258 (trihydrochloride) hazardous?

Hoechst 33258 (trihydrochloride) has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "Hoechst 33258 (trihydrochloride) (CAS 23491-45-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1992937-0 (accessed 2026-10-25).

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