129-49-7

129-49-7 structure

Name: Methysergide
Chemical Name: Methysergide maleate salt
CAS Number: 129-49-7
Molecular Formula: C₂₅H₃₁N₃O₆
Molecular Weight: 469.53000
Create Date: 2018-07-30 18:47:14
Modify Date: 2025-08-22 12:58:25
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.

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

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

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

Symbol	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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