Choosing the right oxidation reagent is a critical step in optimizing your oligonucleotide synthesis workflow. While the core chemistry — converting phosphite triesters into stable phosphate diesters — remains the same, differences in solvent composition, iodine concentration, and reagent format can significantly impact performance, compatibility, and ease of use.
At YouDoBio, we offer a full range of iodine-based oxidizer solutions to suit a variety of synthesis platforms, scales, and preferences. Here’s how to choose the one that fits your needs.
What Matters When Choosing an Oxidizer?
- Solvent composition: THF-based vs. THF-free
- Pyridine content: Impacts solvent strength and compatibility
- Iodine concentration: 0.02 M (standard) vs. 0.05 M (higher strength)
- Platform compatibility: Some instruments require specific ratios or solvent exclusions
- Application: Short oligos, long oligos, large-scale production, automation, etc.
🧪 Oxidizer Comparison Table
| Product Name | Iodine Conc. | Solvent Ratio (THF:Pyridine:Water) | Key Feature | Best For |
|---|---|---|---|---|
| Iodine Oxidizer (66:22:12) | 0.02 M | 66:22:12 | High pyridine content | General use, strong solvent systems |
| Iodine Oxidizer (70:20:10) | 0.02 M | 70:20:10 | Balanced formulation | Standard synthesis protocols |
| Iodine Oxidizer (89.6:0.4:10) | 0.02 M | 89.6:0.4:10 | Low-pyridine formulation | Platform-specific compatibility |
| Iodine Oxidizer (90.6:0.4:9) | 0.02 M | 90.6:0.4:9 | Lower water content | Sensitive oligo chemistries |
| Hyacinth Oxidizer (90:10) | 0.05 M | Pyridine:Water 90:10 | High strength, THF-free | THF-restricted systems, faster kinetics |
🔧 Platform Recommendations
| Instrument Type | Recommended Oxidizers |
|---|---|
| ABI (Applied Biosystems) | 70:20:10, 66:22:12 |
| MerMade Systems | 89.6:0.4:10, 90.6:0.4:9 |
| AKTA OligoPilot | Hyacinth (90:10), 66:22:12 |
| High-throughput synthesizers | Hyacinth (90:10) or 66:22:12 for robustness |
Synthesis Recommendations by Use Case
- Short Oligos / Routine Workflows: Use balanced formulations like 70:20:10 or 66:22:12
- Long Oligos or Modified Bases: Favor lower water content versions (90.6:0.4:9)
- Large-Scale Synthesis: Hyacinth (0.05 M) offers more reactive strength, fewer volume changes
- THF-Free Environments: Use Hyacinth Oxidizer (Pyridine/Water only)
- Automation / Robotic Platforms: Choose low-pyridine options like 89.6:0.4:10 for compatibility
Final Tips
- Always match your oxidizer to your reagent compatibility and workflow goals.
- When switching oxidizers, validate the performance in your own platform to ensure consistency.
- YouDoBio supplies all oxidizers across Scandinavia, with local support and fast delivery
