The Acetamide,N-(9-acetyl-6,9-dihydro-6-oxo-1H-purin-2-yl)-, with the CAS registry number 3056-33-5 and EINECS registry number 221-287-0, has the systematic name of N-(9-acetyl-6-oxo-6,9-dihydro-3H-purin-2-yl)acetamide. It is a kind of white or brownish crystalline powder, and belongs to the following product categories: Pyridines, Pyrimidines, Purines and Pteredines; Purine; Nucleotides and Nucleosides; Biochemistry; Nucleobases and their analogs; Nucleosides, Nucleotides & Related Reagents; Bases & Related Reagents; Nucleotides; Building Blocks; Heterocyclic Building Blocks; Purines. The molecular formula of the chemical is C₉H₉N₅O₃. It is always used in biochemical research. 

The physical properties of Acetamide,N-(9-acetyl-6,9-dihydro-6-oxo-1H-purin-2-yl)- are as followings: (1)ACD/LogP: -2.41; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -2.41; (4)ACD/LogD (pH 7.4): -2.43; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1.17; (8)ACD/KOC (pH 7.4): 1.11; (9)#H bond acceptors: 8; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 87.87 Å²; (13)Index of Refraction: 1.752; (14)Molar Refractivity: 57.27 cm³; (15)Molar Volume: 140.2 cm³; (16)Polarizability: 22.7×10^-24cm³; (17)Surface Tension: 71.1 dyne/cm; (18)Density: 1.67 g/cm³.  

Preparation: This chemical can be prepared by 2-amino-1,7(9)-dihydro-purin-6-one and acetic acid anhydride. The reaction will need reagent DMAP, and the menstruum acetic acid. The reaction time is 8 hours with temperature of 160°C, and the yield is about 88%. 

Uses of Acetamide,N-(9-acetyl-6,9-dihydro-6-oxo-1H-purin-2-yl)-: It can react with 2,3-dichlorotetrahydrofuran to produce trans-9-(3-chlorotetrahydrofuran-2-yl)guanine. This reaction will need reagent bis(p-nitrophenyl)phosphate, and the menstruum tetrahydrothiophene 1,1-dioxide. The reaction time is 16 hours with temperature of 100°C, and the yield is about 59.7%. 

You should be cautious while dealing with this chemical. It irritates to eyes, respiratory system and skin. Therefore, you had better take the following instructions: Wear suitable gloves and eye/face protection, and in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C(NC/1=N/C(=O)c2ncn(c2N\1)C(=O)C)C
(2)InChI: InChI=1/C9H9N5O3/c1-4(15)11-9-12-7-6(8(17)13-9)10-3-14(7)5(2)16/h3H,1-2H3,(H2,11,12,13,15,17)
(3)InChIKey: GILZZWCROUGLIS-UHFFFAOYAM