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---
license: cc-by-nc-4.0
size_categories:
- 100K<n<1M
tags:
- chemistry
- molecules
- smiles
- building-blocks
- synthesis
---
# Molport In-Stock Building Blocks Database
The **Molport In-Stock Building Blocks Database** contains SMILES strings and Molport IDs for over **870,000 building blocks** that are currently available for purchase. These compounds represent a diverse collection of reagents and intermediates designed to support **medicinal chemistry, drug discovery, and custom synthesis workflows**.
## Contents
- **SMILES** – The molecular structure in [SMILES notation](https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system).
- **SMILES_CANONICAL** – Canonicalized SMILES representation.
- **MOLPORTID** – Unique Molport identifier for each compound.
## Scope
This dataset includes:
- **All in-stock building blocks** listed at [molport.com](https://www.molport.com)
- Molecules available for purchase either:
- Directly via the [Molport website](https://www.molport.com), or
- By contacting our sales team at **sales@molport.com**.
## Update Frequency
- Files are updated on a **monthly basis** to reflect the latest in-stock availability.
## Accessing Molport Data
Molport data can be accessed through multiple options depending on your workflow:
- **Direct file downloads** – ready-to-use files available for immediate use.
- **FTP access** – ideal for bulk downloads and automated synchronization.
- **Molport API** – programmatic access for integration into cheminformatics pipelines and applications.
Learn more here: [Molport Database Access Options](https://www.molport.com/shop/database)
### Additional Pre-Filtered Libraries
In addition to the full in-stock datasets, Molport provides more than **18 pre-filtered libraries** tailored for specific research applications, including:
- **Drug-Like Compounds Library**
- **Diversity Library**
- **Kinase Library**
- **GPCR Library**
- **Natural Product Library**
- **Known Drugs and Clinical Candidates Library**
- **DEL Reagents Library**
Explore the full selection: [Molport Compound Libraries](https://www.molport.com/shop/libraries)
## Licensing
- Licensed under **CC BY-NC 4.0** — you may use this dataset for internal, non-commercial purposes with attribution to Molport.
- Commercial resale, redistribution, or inclusion in commercial offerings is **prohibited**. |