The IUPAC name of the compound `CH_(3)NHCH_(3)` is

Options

A. Ethanamine
B. N- Ethanamine
C. N- methylmethanamine
D. N- Methylmethanamine

Explanation

To determine the IUPAC name of the compound CH₃NHCH₃, we can follow these steps:

### Step 1: Identify the Structure
The compound CH₃NHCH₃ consists of a nitrogen atom (N) bonded to two methyl groups (CH₃). This indicates that it is a derivative of an amine.

### Step 2: Determine the Parent Chain
In IUPAC nomenclature, we need to identify the longest carbon chain that contains the functional group. Here, the longest chain is one carbon atom (from the methyl groups), which we will consider as the parent chain.

### Step 3: Identify the Functional Group
The functional group in this compound is the amine group (-NH-). Since there is one nitrogen atom, we classify this compound as a primary amine.

### Step 4: Name the Parent Chain
The parent chain consists of one carbon atom, which corresponds to "methane." Since we have an amine functional group, we will modify the name to "methanamine."

### Step 5: Identify Substituents
Since there are two methyl groups attached to the nitrogen atom, we need to indicate this in the name. We denote the methyl groups as substituents on the nitrogen. Thus, we use the prefix "N-methyl" to indicate that a methyl group is attached to the nitrogen.

### Step 6: Combine the Names
Combining the substituent and the parent chain name, we get "N-methylmethanamine."

### Final Answer
The IUPAC name of the compound CH₃NHCH₃ is **N-methylmethanamine**.

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