Molekula
Naphthol AS-TR phosphate disodium salt
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-TR phosphate disodium salt is a water-soluble chromogenic substrate for acid and alkaline phosphatase. Enzymatic cleavage of the phosphate group releases Naphthol AS-TR, which couples with a diazonium salt such as Fast Red TR to form an insoluble, coloured azo deposit at the site of enzyme activity, enabling detection in histochemistry, immunohistochemistry, immunoassays and blotting. CAS: 4264-93-1, Molecular Formula: C18H13ClNNa2O5P, Molecular Weight: 435.71 g/mol. Store at -15 to -20 °C. Warning signal word applies. Molekula supplies Naphthol AS-TR phosphate disodium salt 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.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 g — $88.70 per pack
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Specifications
| Property | Value |
|---|---|
| Appearance | White to off white powder |
| Purity (HPLC) | (HPLC) ≥99.0% |
| Water (KF) | ≤20.0% |
| Identification IR/HMR | confirm |
| Solubility (1 % in water) | Clear, colourless to light yellow |
| Solvent | (HPLC) ≤1.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | -15 to -20 °C |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90028780 |
| CAS Number | 4264-93-1 |
| IUPAC Name | disodium;[3-[(4-chloro-2-methylphenyl)carbamoyl]naphthalen-2-yl] phosphate |
| Molecular Formula | C18H13ClNNa2O5P |
| Molecular Weight | 435.71 |
| Exact Mass | 435.0015 |
| SMILES | CC1=C(C=CC(=C1)Cl)NC(=O)C2=CC3=CC=CC=C3C=C2OP(=O)([O-])[O-].[Na+].[Na+] |
| InChIKey | TYCHZTPSWMGRRI-UHFFFAOYSA-L |
| InChI | InChI=1S/C18H15ClNO5P.2Na/c1-11-8-14(19)6-7-16(11)20-18(21)15-9-12-4-2-3-5-13(12)10-17(15)25-26(22,23)24;;/h2-10H,1H3,(H,20,21)(H2,22,23,24);;/q;2*+1/p-2 |
| PubChem CID | 16219747 |
| REACH Code | Y113 |
| HTS Code | 29242936 |
| 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
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- 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-[(4-chloro-2-methylphenyl)carbamoyl]naphthalen-2-yl] phosphate
- C18H13ClNNa2O5P
- disodium [3-[(4-chloro-2-methyl-phenyl)carbamoyl]-2-naph
- disodium;[3-[(4-chloro-2-methyl-phenyl)carbamoyl]-2-naphthyl] phosphate
- disodium;[3-[(4-chloro-2-methylphenyl)carbamoyl]naphthalen-2-yl] phosphate
- Naphthol AS-TR phosphate disodium
- Naphthol AS-TR phosphate disodium salt, tablet, 4 mg substrate per tablet
- NaphtholAS-TRphosphatedisudiumsalt
- Sodium 3-((4-chloro-2-methylphenyl)carbamoyl)naphthalen-2-yl phosphate
Frequently asked questions
What is Naphthol AS-TR phosphate disodium salt used for?
It is used as a chromogenic substrate for acid and alkaline phosphatase. The enzyme releases Naphthol AS-TR, which couples with a diazonium salt such as Fast Red TR to give a coloured azo precipitate for histochemical staining, immunohistochemistry, immunoassays and blot detection.
What is the chemical formula and molecular weight?
The formula is C18H13ClNNa2O5P with a molecular weight of 435.71 g/mol.
How should this compound be stored?
It must be stored at temperatures between -15 and -20 °C to maintain stability.
What grade is available?
Available in technical grade; specific purity details can be provided upon request.
Can Molekula supply this 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.