The Relative Molecular Mass of Methyl 4-bromobutyrate

Basic Information:

Aliases: 4-Bromobutyric Acid Methyl Ester, 4-Bromo-n-butyrate Methyl Ester

CAS No: 4897-84-1

Molecular Formula: C5H9BrO2

Molecular Weight: 181.03

Physical State: Colorless to pale yellow transparent liquid

Melting Point: 175-190°C

Boiling Point: 186-187°C

Density: 1.434 g/cm³

Uses: It can be used to prepare cyclopropylmethylcyanide derivatives, which are important high-activity compounds.

Methyl 4-bromobutyrate (CAS No.: 4897-84-1), with the molecular formula C5H9BrO2, is an important organic chemical intermediate widely used in organic synthesis, pharmaceuticals, agrochemicals, and other fields. Understanding the relative molecular mass of methyl 4-bromobutyrate is crucial for quantitative chemical calculations and industrial production. This article provides a detailed guide on calculating the relative molecular mass of methyl 4-bromobutyrate and helps you better understand its chemical properties.

Chemical Structure of Methyl 4-bromobutyrate

The molecular formula of methyl 4-bromobutyrate is C5H9BrO2, and its structure consists of:

5 carbon atoms

9 hydrogen atoms

1 bromine atom

2 oxygen atoms

This compound is essentially a brominated ester composed of a butyric acid moiety and a bromine atom.

What Is Relative Molecular Mass?

Relative molecular mass (also referred to as molecular weight) is the ratio of the mass of a molecule to 1/12 of the mass of a carbon-12 atom. It is dimensionless and plays a critical role in chemistry, especially in molar calculations of reactants and products in chemical reactions.

How to Calculate the Relative Molecular Mass of Methyl 4-bromobutyrate?

To calculate the relative molecular mass of Methyl 4-bromobutyrate, you need the relative atomic masses of the elements it contains. Below are the commonly used relative atomic masses (in g/mol):

Carbon (C): 12.01 g/mol

Hydrogen (H): 1.008 g/mol

Bromine (Br): 79.90 g/mol

Oxygen (O): 16.00 g/mol

Step-by-Step Calculation:

Mass of Carbon (C):5C×12.01g/mol=60.05g/mol

Mass of Hydrogen (H):9H×1.008g/mol=9.072g/mol

Mass of Bromine (Br):1Br×79.90g/mol=79.90g/mol

Mass of Oxygen (O):2O×16.00g/mol=32.00g/mol

Total Relative Molecular Mass:

Add the masses of all the elements together:

60.05+9.072+79.90+32.00=169.02g/mol

Therefore, the relative molecular mass of Methyl 4-bromobutyrate  (CAS No.: 4897-84-1) is 169.02 g/mol.

Why Is Relative Molecular Mass Important?

The relative molecular mass of a compound is crucial for several chemical and industrial applications:

Reaction Calculations: Knowing the accurate relative molecular mass allows precise calculation of molar ratios in chemical reactions, ensuring the proper proportions of reactants.

Mass Balance: In industrial production, understanding the relative molecular mass helps maintain the correct input of raw materials and achieve the desired product yield.

Solution Preparation: When preparing standard solutions, the relative molecular mass is essential for calculating the exact amount of the compound needed.

Methyl 4-bromobutyrate  is a key chemical intermediate with a relative molecular mass of 169.02 g/mol. This value is of great importance for researchers and industrial practitioners in reaction design, mass balance, and process optimization. Accurately understanding the relative molecular mass of chemical compounds helps improve production efficiency and ensures precise chemical reactions.