Methysergide

Modify Date: 2025-08-22 12:58:25

Methysergide Structure
Methysergide structure
Common Name Methysergide
CAS Number 129-49-7 Molecular Weight 469.53000
Density 1.28g/cm3 Boiling Point 634.4ºC at 760 mmHg
Molecular Formula C25H31N3O6 Melting Point N/A
MSDS Chinese USA Flash Point 337.5ºC
Symbol GHS06
GHS06
Signal Word Danger

 Use of Methysergide


Methysergide is a prescription drug formerly used for prophylaxis of cluster headaches/migraine headaches, but is no longer recommended due to retroperitoneal/retropulmonary fibrosis. It is also used in carcinoid syndrome to treat severe diarrhea. It may also be used in the treatment of serotonin syndrome.

 Names

Name Methysergide maleate salt
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.28g/cm3
Boiling Point 634.4ºC at 760 mmHg
Molecular Formula C25H31N3O6
Molecular Weight 469.53000
Flash Point 337.5ºC
Exact Mass 469.22100
PSA 132.10000
LogP 1.97570
Vapour Pressure 5.74E-17mmHg at 25°C

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
KE5410000
CAS REGISTRY NUMBER :
129-49-7
LAST UPDATED :
199509
DATA ITEMS CITED :
10
MOLECULAR FORMULA :
C21-H27-N3-O2.C4-H4-O4
MOLECULAR WEIGHT :
469.59

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
200 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
125 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
581 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
185 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
28 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
DOSE :
400 ug/kg
SEX/DURATION :
female 1 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Fertility - other measures of fertility
TYPE OF TEST :
Cytogenetic analysis

MUTATION DATA

TEST SYSTEM :
Rodent - mouse
DOSE/DURATION :
100 mg/kg
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 50,317,1978

 Safety Information

Symbol GHS06
GHS06
Signal Word Danger
Hazard Statements H301
Precautionary Statements Missing Phrase - N15.00950417
Personal Protective Equipment Eyeshields;Faceshields;Gloves;type P2 (EN 143) respirator cartridges
Hazard Codes T: Toxic;
Risk Phrases R25
Safety Phrases S45
RIDADR UN 2811 6
WGK Germany 3
RTECS KE5410000
Packaging Group III
Hazard Class 6.1(b)

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 Synonyms

Methysergide maleate
Methysergide maleate,[8β(S)]-9,10-Didehydro-N-[1-(hydroxymethyl)propyl]-1,6-dimethylergoline-8-carboxamidemaleate
MFCD00083185
EINECS 204-950-9
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