Molekula
Naphthol AS-D-chloroacetate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Naphthol AS-D-chloroacetate is a histochemical and cytochemical substrate for specific esterase (chloroacetate esterase), used in the Leder stain to detect neutrophils, granulocytes and mast cells in blood smears, bone marrow and tissue sections. It is a crystalline solid with a molecular formula of C20H16ClNO3 and a molecular weight of 353.80 g/mol. It must be stored at temperatures between -15 and -20 °C. The substance is classified with a warning signal word due to potential hazards. Molekula supplies Naphthol AS-D-chloroacetate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
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1 g — $214.00 per pack
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Specifications
| Property | Value |
|---|---|
| Appearance | White needles |
| Purity | ≥98.0% TLC |
| Storage Conditions | Long term storage at -20 Deg C |
| Solution Test | 5% solution in acetone is clear and colourless |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | -15 to -20 °C |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 31848932 |
| CAS Number | 35245-26-2 |
| IUPAC Name | [3-[(2-methylphenyl)carbamoyl]naphthalen-2-yl] 2-chloroacetate |
| EC Number | 252-463-5 |
| Molecular Formula | C20H16ClNO3 |
| Molecular Weight | 353.80 |
| Exact Mass | 353.0819 |
| SMILES | CC1=CC=CC=C1NC(=O)C2=CC3=CC=CC=C3C=C2OC(=O)CCl |
| InChIKey | FMVKYSCWHDVMGO-UHFFFAOYSA-N |
| InChI | InChI=1S/C20H16ClNO3/c1-13-6-2-5-9-17(13)22-20(24)16-10-14-7-3-4-8-15(14)11-18(16)25-19(23)12-21/h2-11H,12H2,1H3,(H,22,24) |
| PubChem CID | 160247 |
| REACH Code | Y113 |
| HTS Code | 29242977 |
| Tariff Code | 2924297099 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- [3-(o-Tolylcarbamoyl)-2-naphthyl] 2-chloroacetate
- [3-[(2-methylphenyl)carbamoyl]naphthalen-2-yl] 2-chloroacetate
- 2-(O-tolylcarbamoyl)naphthalen-3-yl 2-chloroacetate
- 3-(((2-Methylphenyl)amino)carbonyl)-2-naphthalenyl 2-chloroacetate
- 3-[(2-methylphenyl)carbamoyl]-2-naphthyl chloroacetate
- 3-[[(2-methylphenyl)amino]carbonyl]-2-naphthyl chloroacetate
- 3-Hydroxy-2-naphthoic-o-toluidide chloroacetate
- Acetic acid, chloro-, (S)-
- Acetic acid, chloro-, 3-[[(2-methylphenyl)amino]carbonyl]-2-naphthalenylester
- LEDER STAIN
Frequently asked questions
What is Naphthol AS-D-chloroacetate used for?
It is used as a substrate for specific esterase (chloroacetate esterase) in the Leder stain, a histochemical and cytochemical method for detecting neutrophils, granulocytes and mast cells in blood, bone marrow and tissue sections.
What is the chemical formula and molecular weight?
The formula is C20H16ClNO3 with a molecular weight of 353.80 g/mol.
How should Naphthol AS-D-chloroacetate be stored?
It must be stored at temperatures between -15 and -20 °C to maintain stability and prevent degradation.
What grade is available?
It is supplied as a biochemical and diagnostic reagent for staining applications; specific purity details can be provided upon request.
Can Molekula supply it in bulk?
Yes, bulk quantities are available—please contact our sales team for pricing and availability.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.