Assign the IUPAC name for the following compound.
`{:(H_2C-COOH),(" "|),(HOC-COOH),(" "|),(H_2C-COOH):}`

Options

A. 2-hydroxypentan, -1,5-dioic acid
B. 2-carboxy - 2 - hydroxypentan -1,5-dioic acid
C. 2-hydroxypropan -1,2,3- tricarboxylic acid
D. 3 - hydroxypentan -1,2,3 - trioic acid

Answer

To assign the IUPAC name for the given compound, we will follow these steps:

### Step 1: Identify the longest carbon chain
The compound consists of three carboxylic acid groups (COOH) and a hydroxyl group (OH). We need to identify the longest continuous carbon chain that includes the functional groups.

### Step 2: Count the carbon atoms
In the given structure, we can see that the longest chain has three carbon atoms. This chain will be the backbone of our compound.

### Step 3: Identify and prioritize functional groups
The main functional group in this compound is the carboxylic acid (COOH). Since there are three carboxylic acid groups, we will denote this as "tricarboxylic acid". The hydroxyl group (OH) will also be considered in the naming.

### Step 4: Number the carbon chain
We will number the carbon chain starting from the end nearest to the carboxylic acid group to give the lowest possible numbers to the functional groups. In this case, we can number the chain as follows:
1. COOH (1)
2. OH (2)
3. COOH (3)

### Step 5: Assign the IUPAC name
Since we have three carboxylic acid groups, we will use the prefix "tricarboxylic". The hydroxyl group is on the second carbon, so we will use "2-hydroxy" in the name. The base name for the three-carbon chain is "propane".

Thus, the complete IUPAC name for the compound is **2-hydroxypropane-1,2,3-tricarboxylic acid**.

### Summary of the IUPAC Name
- Longest chain: Propane
- Functional groups: 3 carboxylic acids and 1 hydroxyl group
- Final name: **2-hydroxypropane-1,2,3-tricarboxylic acid**

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