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Cyproheptadine Hydrochloride Sesquihydrate
(CAS RN:41354-29-4 Product Number:C3218)


Cyproheptadine Hydrochloride
Synonym 4-(5H-Dibenzo[a,d]cyclohepten-5-ylidene)-1-methylpiperidine Hydrochloride Sesquihydrate

General Information

Product Number C3218

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Purity/Analysis Method >98.0%(HPLC)(T)
Storage Temperature
M.F. / M.W. C21H21N·HCl·11/2H2O=350.88
CAS RN 41354-29-4
Related CAS RN 129-03-3,969-33-5
MDL Number MFCD00012538
Packaging and Container
  • Product Details
  • Safety & Regulations


Appearance White to Almost white powder to crystal
Purity(HPLC) min. 98.0 area%
Purity(Nonaqueous Titration) min. 98.0 %(after drying) 
Drying loss 7.0 to 9.0 %

Data of Reference

λmax 285(0.05mol/L H2SO4)(lit.)


PubChem SID 354333357
Merck Index(14) 2773
RTECS# TM7050000
EC Number 213-535-1


Signal Word Danger
Hazard Statements
  • H301
  • :Toxic if swallowed.
  • H315
  • :Causes skin irritation.
  • H319
  • :Causes serious eye irritation.
Precautionary Statements
  • P264
  • :Wash hands and face thoroughly after handling.
  • P270
  • :Do not eat, drink or smoke when using this product.
  • P280
  • :Wear protective gloves, eye protection.
  • P301+P310+P330
  • :IF SWALLOWED: Immediately call a POISON CENTER or doctor. Rinse mouth.
  • P302+P352+P332+P313+P362+P364
  • :IF ON SKIN: Wash with plenty of water. If skin irritation occurs: Get medical advice or attention. Take off contaminated clothing and wash it before reuse.
  • P305+P351+P338+P337+P313
  • :IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice or attention.

Transport Information

UN Number 2811
Class 6.1
Packing Group III
HS Number 2933399990


Cyproheptadine Hydrochloride: A Potent 5-HT Receptor and Histamine H1 Receptor Antagonist

Cyproheptadine hydrochloride is a 5-HT (serotonin, [S0370 (hydrochloride)]) receptor antagonist with antiserotonin activity comparable with that of LSD. In addition, it is histamine H1 receptor antagonist with potent antihistaminic activity. Meanwhile, it has anticholinergic effect as a side effect. (The product is for research purpose only.)


PubMed Literature

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