Sodium trimethoxyborohydride
Sodium trimethoxyborohydride (CAS: 16940-17-3), with the chemical formula NaB(OCH3)3H and a molecular weight of 127.91 g/mol, is a specialised reducing agent. It belongs to the borohydride class of compounds, known for their utility in organic synthesis. This reagent is primarily employed in chemical synthesis and reduction reactions, offering a selective and effective means to achieve specific molecular transformations in laboratory and industrial settings.

Selective Reduction Reactions
Sodium trimethoxyborohydride is frequently utilised for the selective reduction of functional groups in organic molecules. Its reactivity profile allows for controlled transformations, making it valuable in multi-step synthetic pathways where chemoselectivity is paramount.
Synthesis of Pharmaceutical Intermediates
This compound serves as a key reagent in the synthesis of various pharmaceutical intermediates. Its ability to perform specific reductions contributes to the efficient and targeted construction of complex molecular architectures required for drug development.
Borohydride Chemistry
As a member of the borohydride family, sodium trimethoxyborohydride participates in diverse chemical syntheses. It is applied in reactions requiring a hydride source, offering an alternative to other reducing agents based on specific reaction conditions and desired outcomes.
| Molecular weight | 127.91 |
|---|---|
| Linear formula | NaB(OCH3)3H |
| Grade | technical grade |


Hazard statements
- H228Flammable solid
- H261In contact with water releases flammable gas
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P231Handle under inert gas
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
- P422
| Protective equipment | Eyeshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3396 4.3/PG 2 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,Xi |
| Risk statements (R) | 11-15-36/37/38 |
| Safety statements (S) | 16-26-33-36/37/39-43 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Sodium trimethoxyborohydride used for?
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Sodium trimethoxyborohydride is primarily used as a reducing agent in chemical synthesis, particularly for selective reductions of functional groups in organic molecules and the synthesis of pharmaceutical intermediates.
What are the CAS number and formula for Sodium trimethoxyborohydride?
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The CAS number for Sodium trimethoxyborohydride is 16940-17-3, and its chemical formula is NaB(OCH3)3H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Sodium trimethoxyborohydride in technical grade. We do not represent this product as USP, BP, or EP grade.
How is Sodium trimethoxyborohydride handled and stored?
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Sodium trimethoxyborohydride is a flammable solid and reacts with water, liberating flammable gases. It is also a skin, eye, and respiratory irritant. Handle in a well-ventilated area, away from ignition sources, and incompatible materials. Store in a tightly sealed container, protected from moisture.
How can I request a sample or quote for Sodium trimethoxyborohydride?
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To request a sample or quote for Sodium trimethoxyborohydride, please contact our sales department through the TSS website or by telephone, providing your specific requirements.
How is Sodium trimethoxyborohydride packed and shipped?
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Sodium trimethoxyborohydride is packed and shipped according to international regulations for hazardous materials, including UN 3396 classification for transport. TSS is a global supplier and exporter.
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