The CAS register number of Thieno[2,3-d]pyrimidin-4(3H)-one,3-amino-2,5,6-trimethyl- is 80381-63-1. It also can be called as 3-Amino-2,5,6-trimethylthieno-[2,3-d]pyrimidin-4(3H)-one and the IUPAC name about this chemical is 3-amino-2,5,6-trimethylthieno[2,3-d]pyrimidin-4-one. The molecular formula about this chemical is C₉H₁₁N₃OS and molecular weight is 209.2681.

Physical properties about Thieno[2,3-d]pyrimidin-4(3H)-one,3-amino-2,5,6-trimethyl- are: (1)ACD/LogP: 0.56; (2)#H bond acceptors: 4; (3)#H bond donors: 2; (4)#Freely Rotating Bonds: 1; (5)Polar Surface Area: 64.15Ų; (6)Index of Refraction: 1.718; (7)Molar Refractivity: 55.95 cm³; (8)Molar Volume: 141.9 cm³; (9)Polarizability: 22.18x10^-24cm³; (10)Surface Tension: 54.6 dyne/cm; (11)Flash Point: 204.1 °C; (12)Enthalpy of Vaporization: 66.66 kJ/mol; (13)Boiling Point: 413.8 °C at 760 mmHg; (14)Vapour Pressure: 4.67E-07 mmHg at 25°C.

Preparation: this chemical can be prepared by 2-acetylamino-4,5-dimethyl-thiophene-3-carboxylic acid ethyl ester at heating. This reaction will need reagent hydrazine hydrate. The reaction time is 24 hour(s). The yield is about 61.6%.

Uses of Thieno[2,3-d]pyrimidin-4(3H)-one,3-amino-2,5,6-trimethyl-: it can be used to produce 2,5,6-trimethylthieno[2,3-d]pyrimidin-4(3H)-one. This reaction will need reagent NaNO₂, AcOH and solvent H₂O. The yield is about 71%.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C1c2c(c(sc2/N=C(\N1N)C)C)C
(2)InChI: InChI=1/C9H11N3OS/c1-4-5(2)14-8-7(4)9(13)12(10)6(3)11-8/h10H2,1-3H3
(3)InChIKey: SVXIDPWZEHWIRT-UHFFFAOYAH
(4)Std. InChI: InChI=1S/C9H11N3OS/c1-4-5(2)14-8-7(4)9(13)12(10)6(3)11-8/h10H2,1-3H3
(5)Std. InChIKey: SVXIDPWZEHWIRT-UHFFFAOYSA-N