Chlorpromazine hydrochloride
Chlorpromazine hydrochloride (CAS: 69-09-0), a phenothiazine derivative with the formula C17H19ClN2S · HCl and a molecular weight of 355.33 g/mol, is a critical reagent for analytical chemistry. It serves as a substitute for benzidine, o-dianisidine, and o-tolidine in the quantitative determination of trace amounts of hemoglobin and peroxidase, meeting USP testing specifications. This compound is vital in biochemical research and diagnostics.
- IUPAC
- 2-Chloro-10-(3-dimethylaminopropyl)phenothiazine hydrochloride,CPZ,Largactil
- Synonyms
- 2-Chloro-10-(3-dimethylaminopropyl)phenothiazine hydrochloride,CPZ,Largactil

Hemoglobin Determination
Chlorpromazine hydrochloride is employed as a substitute for benzidine, o-dianisidine, and o-tolidine in the accurate determination of microquantities of hemoglobin. Its use ensures reliable results in clinical and research settings.
Peroxidase Assays
This chemical serves as a chromogenic substrate in assays for peroxidase activity. It allows for the sensitive detection of enzymatic activity crucial in various biological and chemical analyses.
Analytical Reagent
Meeting USP testing specifications, Chlorpromazine hydrochloride functions as a key analytical reagent. Its well-defined properties make it suitable for standardisation and reference in chromatographic and other analytical procedures.
| Molecular weight | 355.33 |
|---|---|
| Empirical formula | C17H19ClN2S · HCl |
| Application | Substitute for benzidine, o-dianisidine, and o-tolidine in the determination of microquantities of hemoglobin and peroxidase. |
| Suitability | meets USP testing specifications |

Hazard statements
- H301Toxic if swallowed
- H330Fatal if inhaled
Precautionary statements
- P260Do not breathe dust, fume, gas, mist, vapours or spray
- P284Wear respiratory protection
- P301IF SWALLOWED
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 2811PIH 6.1 / PGI |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T+ |
| Risk statements (R) | 25-26 |
| Safety statements (S) | 28-36/37-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Chlorpromazine hydrochloride used for?
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Chlorpromazine hydrochloride is used as a substitute for benzidine, o-dianisidine, and o-tolidine in the determination of microquantities of hemoglobin and peroxidase. It meets USP testing specifications and is valuable in analytical and biochemical applications.
What is the CAS number and formula for Chlorpromazine hydrochloride?
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The CAS number for Chlorpromazine hydrochloride is 69-09-0, and its formula is C17H19ClN2S · HCl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Chlorpromazine hydrochloride that meets USP testing specifications. For precise assay and purity information, please refer to the product's Certificate of Analysis.
How should Chlorpromazine hydrochloride be handled safely?
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Chlorpromazine hydrochloride is classified as acutely toxic and can be fatal if inhaled or swallowed. Handle with extreme caution, using appropriate personal protective equipment including eyeshields, face shields, gloves, and a full-face particle respirator (N100 US/P3 EN143). Ensure adequate ventilation and avoid dust formation.
How is Chlorpromazine hydrochloride packed and shipped?
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Chlorpromazine hydrochloride is carefully packed to ensure integrity during transit and is exported globally by Tech Serve Solutions. Specific packaging details are available upon request.
How can I request a sample or quote for Chlorpromazine hydrochloride?
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To request a sample or a quote for Chlorpromazine hydrochloride, please contact the Tech Serve Solutions sales team via our website or by phone. Provide your details and the product CAS number (69-09-0).
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