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---
title: ORD Reagent Index Builder
emoji: 🧪
colorFrom: blue
colorTo: purple
sdk: gradio
app_file: app.py
pinned: false
license: apache-2.0
---
# ORD Reagent Index Builder
Fast search index builder for the Open Reaction Database (2.7M reactions) on Hugging Face Spaces.
## Features
✅ **No Docker** - Pure Python with Gradio
✅ **Fast** - 10-20 minutes on HF servers
✅ **Simple** - Single click to start
✅ **Smart** - PubChem chemical name lookup
✅ **Streaming** - Memory-efficient processing
## Setup
1. Space created with Gradio SDK
2. Add `HF_TOKEN` as a Space secret
3. Click "Start Building Index"
4. Watch the progress
5. Dataset auto-uploads to `smitathkr1/ord-reagent-index`
## Usage
```python
from datasets import load_dataset
# Load the index
ds = load_dataset('smitathkr1/ord-reagent-index')
# Search for SMILES
smiles_results = ds.filter(lambda x: x['search_term'] == 'c1ccccc1' and x['search_type'] == 'smiles')
# Search for reagent names
name_results = ds.filter(lambda x: x['search_term'].startswith('water'))
```
## Performance
- **Local PC:** 45-60 minutes
- **HF Spaces:** 10-20 minutes
- **Speedup:** 10-15x faster!
## About
Built with:
- **Gradio** - Web UI
- **Hugging Face Datasets** - Data handling
- **PubChem** - Chemical name lookup
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