Empirical Formula: C₄H₃NOS
Molecular Weight: 113.1377
Nominal Mass: 113 Da
Average Mass: 113.1377 Da
Monoisotopic Mass: 112.993534 Da 
Index of Refraction: 1.621
Molar Refractivity: 29.48 cm³
Molar Volume: 83.8 cm³
Surface Tension: 56.3 dyne/cm
Density: 1.35 g/cm³
Flash Point: 88.3 °C
Enthalpy of Vaporization: 45.89 kJ/mol
Boiling Point: 222.4 °C at 760 mmHg
Vapour Pressure: 0.102 mmHg at 25 °C
Melting point: 60-64 °C
Structure of Thiazole-4-carboxaldehyde (CAS NO.3364-80-5):
                        
IUPAC Name: 1,3-Thiazole-4-carbaldehyde
Canonical SMILES: C1=C(N=CS1)C=O
InChI: InChI=1S/C4H3NOS/c6-1-4-2-7-3-5-4/h1-3H
InChIKey: WRFKSVINLIQRKF-UHFFFAOYSA-N
Product Category of Thiazole-4-carboxaldehyde (CAS NO.3364-80-5): Aldehydes;Blocks;Thiazoles

Hazard Codes of Thiazole-4-carboxaldehyde (CAS NO.3364-80-5): Xi,Xn
Risk Statements: 36/37/38-43-22 
R22:Harmful if swallowed. 
R36/37/38:Irritating to eyes, respiratory system and skin. 
R43:May cause sensitization by skin contact.
Safety Statements: 26-36/37/39-36/37
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37:Wear suitable protective clothing and gloves. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
Hazard Note: Irritant/Keep Cold

 Thiazole-4-carboxaldehyde , its cas register number is 3364-80-5. It also can be called 1,3-Thiazole-4-carboxaldehyde ; 4-Thiazolecarboxyaldehyde ; and 4-Formylthiazole .