The CAS register number of 1,3,5-Trimethyl-1H-pyrazole-4-carboxaldehyde is 2644-93-1. It also can be called as 1H-Pyrazole-4-carboxaldehyde,1,3,5-trimethyl- and the IUPAC name about this chemical is 1,3,5-trimethylpyrazole-4-carbaldehyde. The molecular formula about this chemical is C₇H₁₀N₂O and the molecular weight is 138.17.

Physical properties about 1,3,5-Trimethyl-1H-pyrazole-4-carboxaldehyde are: (1)ACD/LogP: 0.51; (2)#H bond acceptors: 3; (3)#Freely Rotating Bonds: 1; (4)Polar Surface Area: 34.89Ų; (5)Index of Refraction: 1.536; (6)Molar Refractivity: 39.55 cm³; (7)Molar Volume: 126.7 cm³; (8)Polarizability: 15.68x10^-24cm³; (9)Surface Tension: 34.3 dyne/cm; (10)Enthalpy of Vaporization: 47.75 kJ/mol; (11)Boiling Point: 240.6 °C at 760 mmHg; (12)Vapour Pressure: 0.0376 mmHg at 25°C.

Preparation: this chemical can be prepared by ethyl 2-azido-3-(1,3,5-trimethylpyrazol-4-yl)propenoate. This reaction also will produce 1,3-dimethyl-1H-pyrazolo[3,4-c]pyridine-5-carboxylic acid ethyl ester. This reaction will need reagent solvent xylene. The reaction time is 20 min at heating. The yield is about 22%.

Uses of 1,3,5-Trimethyl-1H-pyrazole-4-carboxaldehyde: it can be used to produce ethyl 2-azido-3-(1,3,5-trimethylpyrazol-4-yl)propenoate with azidoacetic acid ethyl ester at temperature of -15 - -10 ℃. This reaction will need reagent NaOEt and solvent ethanol. The yield is about 69%.

When you are using this chemical, please be cautious about it as the following:
This chemical is irritating to eyes, respiratory system and skin. When you are using it, wear suitable protective clothing, gloves and eye/face protection, you also need avoid contact with skin and eyes and do not breathe dust. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1)SMILES: O=Cc1c(nn(c1C)C)C
(2)InChI: InChI=1/C7H10N2O/c1-5-7(4-10)6(2)9(3)8-5/h4H,1-3H3
(3)InChIKey: HMTUBXVXHHITGO-UHFFFAOYAM
(4)Std. InChI: InChI=1S/C7H10N2O/c1-5-7(4-10)6(2)9(3)8-5/h4H,1-3H3
(5)Std. InChIKey: HMTUBXVXHHITGO-UHFFFAOYSA-N