4',6-Diamidino-2-phenylindole dihydrochloride
Also known as: DAPI dihydrochloride, 2-(4-Amidinophenyl)-6-indolecarbamidine dihydrochloride, 2-(4-Carbamimidoylphenyl)-1H-indole-6-carboximidamide dihydrochloride, 4,6-Diamidino-2-phenylindole dihydrochloride, 4',6-Diamidine-2-phenylindole dihydrochloride, 2-(4-Amidinophenyl)indole-6-carboxamidine dihydrochloride, DAPI hydrochloride, MFCD00012681, EINECS 249-186-7
4',6-Diamidino-2-phenylindole dihydrochloride (CAS 28718-90-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C16H17Cl2N5 and a molecular weight of 313.79 g/mol. Key properties include a melting point of >300°C (dec.), a boiling point of 545.4ºC at 760mmHg, a density of 1.41g/cm3 and a flash point of 283.6ºC. It is listed by 1 supplier, from 5.10 to 9.00 CNY. Record last updated Nov 3, 2026.
- CAS No.
- 28718-90-3
- Jingsj CID
- J-28711-9
- Molecular Formula
- C16H17Cl2N5
- Molecular Weight
- 313.79 g/mol
- Category
- Pharma Intermediates
- Last updated
- 11/3/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | 90% 100ml | ¥510.00 | $0.76 /mlBest ¥5.10/ml CNY | CN China MOQ 100ml | |
Made to Order | 90% 50ml | ¥270.00 | $0.81 /ml ¥5.40/ml CNY | CN China MOQ 50ml | |
Made to Order | 90% 10ml | ¥90.00 | $1.35 /ml ¥9.00/ml CNY | CN China MOQ 10ml |
Physicochemical Properties
| Melting Point | >300°C (dec.) |
|---|---|
| Boiling Point | 545.4ºC at 760mmHg |
| Density | 1.41g/cm3 |
| Flash Point | 283.6ºC |
| Exact Mass | 312.086090 |
| PSA | 115.53000 |
| LogP | 5.60710 |
| Vapor Pressure | 5.96E-12mmHg at 25°C |
| Additional Property | H2O: 10 mg/mL heat or sonication may be required. Solutions stored in the dark at room temperature or 4 °C should be stable for 2 to 3 weeks. |
Activity & Biological Data
| Additional Information | [1]. Kapuscinski J, et al. DAPI: a DNA-specific fluorescent probe. Biotech Histochem. 1995 Sep;70(5):220-33. |
|---|
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 4',6-Diamidino-2-phenylindole dihydrochloride?
The CAS number of 4',6-Diamidino-2-phenylindole dihydrochloride is 28718-90-3.
What are the molecular formula and molecular weight of 4',6-Diamidino-2-phenylindole dihydrochloride?
4',6-Diamidino-2-phenylindole dihydrochloride has molecular formula C16H17Cl2N5 and molecular weight 313.79 g/mol.
Which suppliers offer 4',6-Diamidino-2-phenylindole dihydrochloride?
1 supplier(s) listed; reference unit price ¥5.10–9.00 /ml.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4',6-Diamidino-2-phenylindole dihydrochloride (CAS 28718-90-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-28711-9 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.