The DAPI, with the CAS registry number 28718-90-3, is also known as 2-Phenylindole-4',6-dicarboxamidine dihydrohydrochloride (hydrate). It belongs to the product categories of Indoles and Derivatives; Fluorescent Labels & Indicators. Its EINECS registry number is 249-186-7. This chemical's molecular formula is C₁₆H₁₇Cl₂N₅ and molecular weight is 350.25. Its IUPAC name is called 2-(4-amidinophenyl)-1H -indole-6-carboxamidine. The product should be sealed at temperature of -20 °C.

Physical properties of : (1)ACD/LogP: 1.97; (2)# of Rule of 5 Violations: 1; (3)#H bond acceptors: 5; (4)#H bond donors: 7; (5)#Freely Rotating Bonds: 3; (6)Flash Point: 283.6 °C; (7)Enthalpy of Vaporization: 82.42 kJ/mol; (8)Boiling Point: 545.4 °C at 760 mmHg; (9)Vapour Pressure: 5.96E-12 mmHg at 25°C.

DAPI or 4',6-diamidino-2-phenylindole is a fluorescent stain that binds strongly to A-T rich regions in DNA. It is used extensively in fluorescence microscopy. DAPI can pass through an intact cell membrane therefore it can be used to stain both live and fixed cells, though it passes through the membrane less efficiently in live cells and therefore the effectiveness of the stain is lower.

When you are using this chemical, please be cautious about it as the following:
This chemical may cause inflammation to the skin or other mucous membranes and may cause damage to health. It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. Whenever you will contact it, please wear suitable protective clothing, gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)Canonical SMILES: C1=CC(=CC=C1C2=CC3=C(N2)C=C(C=C3)C(=N)N)C(=N)N.Cl.Cl
(2)InChI: InChI=1S/C16H15N5.2ClH/c17-15(18)10-3-1-9(2-4-10)13-7-11-5-6-12(16(19)20)8-14(11)21-13;;/h1-8,21H,(H3,17,18)(H3,19,20);2*1H
(3)InChIKey: FPNZBYLXNYPRLR-UHFFFAOYSA-N