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3,4-Diaminopyridine, 97%
Description
It is a potassium channel blocker in nerve terminals. It inhibits potassium channel efflux, increasing the duration of the action potential, which results in an increase in the duration of calcium channel opening and enhanced acetylcholine (ACh) release. Increased ACh availability at the motor end plate allows muscles to contract.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.
It is a potassium channel blocker in nerve terminals. It inhibits potassium channel efflux, increasing the duration of the action potential, which results in an increase in the duration of calcium channel opening and enhanced acetylcholine (ACh) release. Increased ACh availability at the motor end plate allows muscles to contract.
Solubility
Soluble in water (24 mg/ml at 20°C), alcohol. Slightly soluble in ether.
Notes
Store under cool dry place. Ensure good ventilation. Incompatible with oxidizing agents.

Specifications
Specifications
Melting Point | 217°C to 220°C |
Flash Point | 240°C (464°F) |
Odor | Unpleasant |
Quantity | 1 g |
UN Number | UN2811 |
Beilstein | 110232 |
Merck Index | 14,2986 |
Solubility Information | Soluble in water (24mg/ml at 20°C),alcohol. Slightly soluble in ether. |
Formula Weight | 109.13 |
Percent Purity | ≥98% |
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Safety and Handling
Hazard Category | H300+H330-H311-H315-H318-H335 |
Hazard Statement | GHS H Statement H300-H330-H312-H319 Fatal if swallowed. Fatal if inhaled. Harmful in contact with skin. Causes serious eye irritation. |
Precautionary Statement | P260-P264b-P270-P271-P280-P284-P301+P310-P302+P352-P304+P340-P305+P351+P338-P310-P312-P330-P332+P313-P361-P363-P501c |
DOTInformation | Transport Hazard Class: 6.1; Packing Group: II; Proper Shipping Name: TOXIC SOLIDS, ORGANIC, N.O.S. |
EINECSNumber | 200-220-9 |
RTECSNumber | US7600000 |
TSCA | No |
Recommended Storage | Ambient temperatures |
RUO – Research Use Only
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