# Custom property set

**Use case:** 

A preconfigured run of PubChem Scraper — Chemical Compound Data: Custom property set. Input — names: caffeine · properties: MolecularFormula, MolecularWeight, XLogP, +2 more. Results are returned as JSON rows in the default dataset; run it as-is or change the input and run your own.

## Input

```json
{
  "names": [
    "caffeine"
  ],
  "properties": [
    "MolecularFormula",
    "MolecularWeight",
    "XLogP",
    "TPSA",
    "Complexity"
  ],
  "includeSynonyms": false,
  "maxSynonyms": 20,
  "maxResultsPerName": 1
}
```

## Output

```json
{
  "cid": {
    "label": "Cid"
  },
  "Title": {
    "label": "Title"
  },
  "MolecularFormula": {
    "label": "Molecular Formula"
  },
  "MolecularWeight": {
    "label": "Molecular Weight"
  },
  "SMILES": {
    "label": "SMILES"
  },
  "InChI": {
    "label": "In Ch I"
  },
  "InChIKey": {
    "label": "In Ch IKey"
  },
  "IUPACName": {
    "label": "IUPACName"
  },
  "XLogP": {
    "label": "XLog P"
  },
  "TPSA": {
    "label": "TPSA"
  },
  "Charge": {
    "label": "Charge"
  },
  "HBondDonorCount": {
    "label": "HBond Donor Count"
  }
}
```

## About this Actor

This example demonstrates how to use [PubChem Scraper — Chemical Compound Data](https://apify.com/ponderable_hydrometer/pubchem-scraper.md) with a specific input configuration. Visit the [Actor detail page](https://apify.com/ponderable_hydrometer/pubchem-scraper.md) to learn more, explore other use cases, and run it yourself.


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This Task's input is already configured above — use it as-is rather than inventing a new one.

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For full API examples (JavaScript, Python, CLI, MCP, OpenAPI), see this Task's Actor page: https://apify.com/ponderable_hydrometer/pubchem-scraper.md

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).