The molecular weight of 4-Methylthiazole (C₄H₅NS) is 99.15554.

4-Methylthiazole (C₄H₅NS) is an organic compound of four elements: Carbon, Hydrogen, Nitrogen, and Sulfur. The molecular weight of 4-Methylthiazole is 99.15554 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

CALCULATION PROCEDURE: 4-Methylthiazole  [C₄H₅NS] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in a 4-Methylthiazole molecule.
You will know different atoms and their number in a 4-Methylthiazole molecule from the chemical formula. The chemical formula of 4-Methylthiazole is C₄H₅NS. From the chemical formula, you can find that one molecule of 4-Methylthiazole consists of four Carbon (C) atoms, five Hydrogen (H) atoms, one Nitrogen (N) atom, and one Sulfur atom.

Step 2: Find out the atomic weights of each atom (from the periodic table).

Atomic weight of Carbon (C): 12.0107 (Ref: Jlab-ele006)
Atomic weight of Hydrogen (H): 1.008 (Ref: Lanl-1)
Atomic weight of Nitrogen (N): 14.00674 (Ref: Jlab-ele007)
Atomic weight of Sulfur (S): 32.066 (Ref: Jlab-ele016)

Step 3: Calculate the total weight of each atom in a 4-Methylthiazole molecule by multiplying its atomic weight by its number.

Number of Carbon atoms in 4-Methylthiazole: 4
Atomic weight of Carbon (C): 12.0107
Total weight of Carbon atoms in 4-Methylthiazole: 12.0107 x 4 = 48.0428

Number of Hydrogen atoms in 4-Methylthiazole: 5
Atomic weight of Hydrogen (H): 1.008
Total weight of Hydrogen atoms in 4-Methylthiazole: 1.008 x 5 = 5.04

Number of Nitrogen atoms in 4-Methylthiazole: 1
Atomic weight of Nitrogen (N): 14.00674
Total weight of Nitrogen atoms in 4-Methylthiazole: 14.00674 x 1 = 14.00674

Number of Sulfur atoms in 4-Methylthiazole: 1
Atomic weight of Sulfur (S): 32.066
Total weight of Sulfur atoms in 4-Methylthiazole: 32.066 x 1 = 32.066

Step 4: Calculate the molecular weight of 4-Methylthiazole by adding up the total weight of all atoms.

Molecular weight of 4-Methylthiazole: 48.0428 (Carbon) + 5.04 (Hydrogen) + 14.00674 (Nitrogen) + 32.066 (Sulfur) = 99.15554

So the molecular weight of 4-Methylthiazole is 99.15554.

4-Methylthiazole [C₄H₅NS] Molecular Weight Calculation

REFERENCES:

• Lanl-1: https://periodic.lanl.gov/1.shtml 
• Jlab-ele006: https://education.jlab.org/itselemental/ele006.html 
• Jlab-ele007: https://education.jlab.org/itselemental/ele007.html
• Jlab-ele016: https://education.jlab.org/itselemental/ele016.html
• Pubchem-Chlorine: https://pubchem.ncbi.nlm.nih.gov/element/Chlorine

See also:

• Hydrogen chloride molecular weight calculation