What chemicals are there in the advertisements of the Chinese dream?

Prazosin hydrochloride, said that this structure is still wrong. The right side should be a C=O double bond, and it is wrong to draw it only as c-o.

Chinese name: prazosin hydrochloride

Chinese synonym: antihypertensive new; 1-(4- amino-6,7-dimethoxy -2- quinazolinyl) -4-(2- furyl) piperazine hydrochloride; Prazosin hydrochloride; Mapes; Ureaplasma urealyticum; minipress

English name: prazosin hydrochloride

English synonyms: 1-(4- amino-6,7-dimethoxy -2- quinazolinyl) -4-(2- furyl) piperonal; 1-(4- amino-6,7-dimethoxy -2- quinazolinyl) -4-(2- furyl) piperazine monohydrochloride; 1-(4- amino-6,7-dimethoxy -2- quinazolinyl) -4-(2- furyl)-piperazine monohydrogen; 2-(4-(2- furoyl) piperazine-1- yl) -4- amino-6,7-dimethoxyquinazoline hydrochloride; 4- amino-6,7-dimethoxy -2-(4-(2- furyl) piperazine-1- yl)-quinazoline hydrochloride; CP- 12299- 1； Deplorin; Haibo vase

Si Nuo. : 19237-84-4

Molecular formula: C 19H22ClN5O4.

Molecular weight: 4 19.86

Melting point? 277 - 280? C

Solubility? H2O: 1？ Mg/ml, transparent and colorless.

Application and synthetic method of prazosin hydrochloride

Chemical properties? Appearance: white or off-white crystalline powder moisture: ≤2.0% (anhydrous prazosin), < 8- 15% (aqueous prazosin) residue on ignition: ≤0.4% heavy metal: ≤50ppm related substances: conforming to the specified content: based on anhydrous substance c19h21n.

Use? Used as an antihypertensive drug