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CAS RN: 6989-98-6 | Product Number: C0433

Tubocurarine Chloride Pentahydrate

Purity: >98.0%(T)(HPLC)
  • Curare Pentahydrate
3   1  
10   18  

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Product Number C0433
Purity / Analysis Method >98.0%(T)(HPLC)
Molecular Formula / Molecular Weight C__3__7H__4__1ClN__2O__6·HCl·5H__2O = 771.73  
Physical State (20 deg.C) Solid
CAS RN 6989-98-6
Related CAS RN 57-94-3&57-95-4
Reaxys Registry Number 3896374
PubChem Substance ID 87565555
Merck Index (14) 9807
MDL Number


Appearance White to Light yellow to Light orange powder to crystal
Purity(HPLC) min. 98.0 area%
Purity(Nonaqueous Titration) min. 98.0 %(calcd.on anh.substance)
Specific rotation [a]20/D +190.0 to +195.0 deg(C=1, H2O)
Solubility in Water almost transparency
Water 10.0 to 13.0 %
Properties (reference)
Melting Point 268 °C(dec.)
Specific Rotation 193° (C=1,H2O)
Solubility in water Soluble
Solubility (soluble in) Methanol
Solubility (insoluble in) Acetone,Benzene,Chloroform,Ether
Pictogram Pictogram
Signal Word Danger
Hazard Statements H301 : Toxic if swallowed.
Precautionary Statements P501 : Dispose of contents/ container to an approved waste disposal plant.
P270 : Do not eat, drink or smoke when using this product.
P264 : Wash skin thoroughly after handling.
P301 + P310 + P330 : IF SWALLOWED: Immediately call a POISON CENTER/doctor. Rinse mouth.
P405 : Store locked up.
Related Laws:
Transport Information:
UN Number UN1544
Class 6.1
Packing Group III
HS Number 2939790090
Tubocurarine Chloride: An Acetylcholine Receptor Antagonist Known as a Muscle Relaxant

Tubocurarine chloride is a curare alkaloid known for its use as an arrow poison and a muscle relaxant. Tubocurarine chloride does not cross the blood–brain barrier and has no action on the central nervous system (CNS), and works as an acetylcholine receptor antagonist in in the peripheral nervous system. Tubocurarine chloride plays a large part in experiments to determine the role of acetylcholine in neuromuscular transmission. (The product is for research purpose only.)


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