Molecular structure of 4-Amino-6-hydroxypyrimidine (CAS NO.1193-22-2) is:

Product Name: 4-Amino-6-hydroxypyrimidine
CAS Registry Number: 1193-22-2
IUPAC Name: 6-amino-1H-pyrimidin-4-one
Molecular Weight: 111.102 [g/mol]
Molecular Formula: C₄H₅N₃O
XLogP3-AA: -1.2
H-Bond Donor: 2
H-Bond Acceptor: 3
EINECS: 214-771-8
Melting Point: 262-264°C
Surface Tension: 69.2 dyne/cm
Density: 1.55 g/cm³
Flash Point: 91.4 °C
Enthalpy of Vaporization: 46.41 kJ/mol
Boiling Point: 227.5 °C at 760 mmHg
Vapour Pressure: 0.0772 mmHg at 25°C 
Product Categories: PYRIMIDINE;Fluorobenzene;Pyridines, Pyrimidines, Purines and Pteredines;Heterocyclic Compounds;Nucleotides and Nucleosides;Pyrimidines;Bases & Related Reagents;Heterocycles;Nucleotides

Safty information about 4-Amino-6-hydroxypyrimidine (CAS NO.1193-22-2) is:
Hazard Codes: Xi
Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing.
HazardClass: IRRITANT

 4-Amino-6-hydroxypyrimidine , its cas register number is 1193-22-2. It also can be called 4-Hydroxy-6-aminopyrimidine ; 4-Oxy-6-aminopyrimidine ; 4-Pyrimidinol, 6-amino- ; 4(1H)-Pyrimidinone, 6-amino- (8CI)(9CI) ; 6-Amino-1H-pyrimidin-4-one .It is a white solid.