The 4(3H)-Quinazolinone,8-chloro-2-methyl-, with the CAS registry number 19407-54-6, is also known as 8-Chloro-2-methylquinazolin-4(3H)-one.  It belongs to the product categories of Blocks; Quinolines. This chemical's molecular formula is C₉H₇ClN₂O and molecular weight is 194.6177. What's more, its systematic name is called 8-Chloro-2-methyl-3H-quinazolin-4-one. When you are dealing with this chemical, you should be very careful. This chemical may cause inflammation to the skin or other mucous membranes. 

Physical properties about 4(3H)-Quinazolinone,8-chloro-2-methyl- are: (1)ACD/LogP: 1.30; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1.3; (4)ACD/LogD (pH 7.4): 1.3; (5)#H bond acceptors: 3; (6)#H bond donors: 1; (7)#Freely Rotating Bonds: 0; (8)Polar Surface Area: 41.46 Å²; (9)Index of Refraction: 1.664; (10)Molar Refractivity: 50.29 cm³; (11)Molar Volume: 135.5 cm³; (12)Surface Tension: 49 dyne/cm; (13)Density: 1.43 g/cm³.

You can still convert the following datas into molecular structure:
(1) SMILES: Cc1[nH]c(=O)c2cccc(c2n1)Cl
(2) InChI: InChI=1/C9H7ClN2O/c1-5-11-8-6(9(13)12-5)3-2-4-7(8)10/h2-4H,1H3,(H,11,12,13)
(3) InChIKey: KEGYAYOQTQMORC-UHFFFAOYAN