The Pyrazine, 2,3,5,6-tetra-2-pyridinyl- is an organic compound with the formula C₂₄H₁₆N₆. The IUPAC name of this chemical is 2,3,5,6-tetrapyridin-2-ylpyrazine. With the CAS registry number 25005-97-4, it is also named as Pyrazine, tetra-2-pyridinyl-. The product's categories are Building Blocks; Heterocyclic Building Blocks; Pyrazines. Additionally, this chemical should be sealed in the container and stored in the cool and dry place.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 2.11; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.11; (4)ACD/LogD (pH 7.4): 2.11; (5)ACD/BCF (pH 5.5): 23.8; (6)ACD/BCF (pH 7.4): 23.8; (7)ACD/KOC (pH 5.5): 336.47; (8)ACD/KOC (pH 7.4): 336.47; (9)#H bond acceptors: 6; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 4; (12)Polar Surface Area: 77.34 Å²; (13)Index of Refraction: 1.65; (14)Molar Refractivity: 113.16 cm³; (15)Molar Volume: 309.9 cm³; (16)Polarizability: 44.86×10^-24 cm³; (17)Surface Tension: 60.8 dyne/cm; (18)Enthalpy of Vaporization: 76.28 kJ/mol; (19)Vapour Pressure: 2.18E-10 mmHg at 25°C; (20)Rotatable Bond Count: 4; (21)Exact Mass: 388.143645; (22)MonoIsotopic Mass: 388.143645; (23)Topological Polar Surface Area: 77.3; (24)Heavy Atom Count: 30; (25)Complexity: 440.

Preparation of Pyrazine, 2,3,5,6-tetra-2-pyridinyl-: It can be obtained by C-pyridin-2-yl-methylamine. This reaction needs reagent cobalt(II) chloride hexahydrate and solvent ethanol by heating and aeration. The reaction time is 3.5 hours. The yield is 48%.

When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing.

People can use the following data to convert to the molecule structure. 
1. SMILES:n1ccccc1c2nc(c(nc2c3ncccc3)c4ncccc4)c5ncccc5
2. InChI:InChI=1/C24H16N6/c1-5-13-25-17(9-1)21-22(18-10-2-6-14-26-18)30-24(20-12-4-8-16-28-20)23(29-21)19-11-3-7-15-27-19/h1-16H 
3. InChIKey:UOJZYBFRNITHCX-UHFFFAOYAK