Structural formula of isopropyl methanoate is

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Explanation

To find the structural formula of isopropyl methanoate, we can follow these steps:

### Step 1: Identify the components of the compound
Isopropyl methanoate is an ester formed from isopropanol (isopropyl) and methanoic acid (formic acid).

### Step 2: Determine the structure of isopropyl
Isopropyl is derived from propane, which has three carbon atoms. The structural formula for isopropyl is:
- CH3-CH(CH3)-

This indicates that the isopropyl group has a central carbon atom bonded to two methyl groups (CH3) and one hydrogen atom.

### Step 3: Determine the structure of methanoate
Methanoate comes from methanoic acid (formic acid), which has the formula HCOOH. The methanoate ion (the part that forms the ester) is represented as:
- HCOO-

This indicates that there is a carbon atom double-bonded to an oxygen atom (C=O) and single-bonded to another oxygen atom (C-O).

### Step 4: Combine the structures to form the ester
In an ester, the isopropyl group will be attached to the oxygen of the methanoate group. The structural formula can be represented as follows:

1. Start with the isopropyl group: CH3-CH(CH3)-
2. Attach it to the methanoate group: -C(=O)O-

Putting it all together, the structural formula of isopropyl methanoate is:
- CH3-CH(CH3)-C(=O)-O-

### Step 5: Finalize the structure
The complete structural formula can be drawn as:
```
O
||
CH3-CH- C-OH
|
CH3
```

### Answer:
The structural formula of isopropyl methanoate is:
- CH3-CH(CH3)-C(=O)-O-