Naphthol AS-OL acetate
Naphthol AS-OL acetate (CAS: 7128-79-2; Formula: C20H17NO4; Molar Mass: 335.35 g/mol) is a chemical compound supplied by Tech Serve Solutions. It is primarily utilised as a reagent in biochemical and histochemical applications, serving as an enzyme substrate. Its properties make it valuable for detection methodologies within biological and chemical research.

Enzyme Substrate
Naphthol AS-OL acetate acts as a substrate for enzymatic reactions, particularly in histochemical staining. Its enzymatic hydrolysis leads to the formation of detectable products, aiding in enzyme localization.
Histochemical Detection
This compound is employed in histochemistry for the detection and localization of specific enzyme activities within tissue samples. The insoluble nature of the product formed aids in precise spatial mapping.
Biochemical Reagent
As a biochemical reagent, Naphthol AS-OL acetate is utilized in various research settings for diagnostic and analytical purposes. It supports methodologies involving enzymatic assays and detection systems.
| Molecular weight | 335.35 |
|---|---|
| Empirical formula | C20H17NO4 |
| Assay | ≥70% |
| Storage temperature | 2-8°C |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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 Naphthol AS-OL acetate used for?
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Naphthol AS-OL acetate is used as an enzyme substrate, particularly in histochemical applications for detection and localization of enzyme activities, and as a general biochemical reagent.
What are the CAS number and chemical formula for Naphthol AS-OL acetate?
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The CAS number for Naphthol AS-OL acetate is 7128-79-2, and its chemical formula is C20H17NO4.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Naphthol AS-OL acetate with an assay of ≥70%. We do not represent this product as USP, BP, EP, or pharmacopoeia grade.
How should Naphthol AS-OL acetate be handled?
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Handle Naphthol AS-OL acetate with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves. Avoid breathing dust. Ensure adequate ventilation. It is classified as a warning substance, causing skin irritation, serious eye irritation, and respiratory irritation.
How is Naphthol AS-OL acetate shipped and exported?
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Tech Serve Solutions is an experienced global supplier and exporter of fine chemicals, including Naphthol AS-OL acetate, adhering to all necessary shipping and export regulations.
How can I request a sample or quote for Naphthol AS-OL acetate?
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To request a sample or quote for Naphthol AS-OL acetate, please contact our sales team through the website or by phone.
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