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Basic Information
CAS No.: 2021-21-8
Name: 1,2,3,6-tetrahydro-N-methylphthalimide
Article Data: 5
Molecular Structure:
Molecular Structure of 2021-21-8 (1,2,3,6-tetrahydro-N-methylphthalimide)
Formula: C9H11 N O2
Molecular Weight: 165.192
Synonyms: 4-Cyclohexene-1,2-dicarboximide,N-methyl- (7CI,8CI)
Density: 1.196g/cm3
Boiling Point: 302.1°Cat760mmHg
Flash Point: 139.2°C
Safety: An experimental teratogen. Other experimental reproductive effects. When heated to decomposition it emits toxic fumes of NOx.
PSA: 49.69000
LogP: 0.04960
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Chemistry

IUPAC Name: 2-Methyl-3a,4,7,7a-tetrahydroisoindole-1,3-dione
Synonyms: 1,2,3,6-Tetrahydro-N-methylphthalimide ; 4-Cyclohexene-1,2-dicarboximide, N-methyl- ; N-Methyl-1,2,3,6-tetrahydrophthalimide ; N-Methyl-4-cyclohexene-1,2-dicarboximide
CAS NO:2021-21-8
Molecular Formula of N-Methyl-4-cyclohexene-1,2-dicarb-oximide (CAS NO.2021-21-8) :C9H11NO2
Molecular Weight of N-Methyl-4-cyclohexene-1,2-dicarb-oximide (CAS NO.2021-21-8) :165.18914
Molecular Structure of N-Methyl-4-cyclohexene-1,2-dicarb-oximide (CAS NO.2021-21-8) :
EINECS: 217-965-0
Index of Refraction: 1.536
Surface Tension: 42.1 dyne/cm
Density: 1.196 g/cm3
Flash Point: 139.2 °C
Enthalpy of Vaporization: 54.22 kJ/mol
Boiling Point: 302.1 °C at 760 mmHg
Vapour Pressure: 0.00101 mmHg at 25°C

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
cat LD50 oral 2500ug/kg (2.5mg/kg)   Experimental Animals. Jikken Dobutso Iho. Vol. 21, Pg. 88, 1972.
cat LD50 skin 4mg/kg (4mg/kg) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

BEHAVIORAL: EXCITEMENT		 Nippon Yakurigaku Zasshi. Japanese Journal of Pharmacology. Vol. 65, Pg. 182, 1969.
chicken LDLo oral 50mg/kg (50mg/kg)   Toxicology and Applied Pharmacology. Vol. 12, Pg. 536, 1968.
dog LD50 oral 2mg/kg (2mg/kg)   Experimental Animals. Jikken Dobutso Iho. Vol. 21, Pg. 88, 1972.
dog LD50 skin 2750ug/kg (2.75mg/kg) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

BEHAVIORAL: EXCITEMENT		 Nippon Yakurigaku Zasshi. Japanese Journal of Pharmacology. Vol. 65, Pg. 182, 1969.
dog LDLo intraperitoneal 2mg/kg (2mg/kg) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

BEHAVIORAL: EXCITEMENT

CARDIAC: CARDIOMYOPATHY INCLUDING INFARCTION		 Toxicology and Applied Pharmacology. Vol. 12, Pg. 536, 1968.
guinea pig LD50 oral 500ug/kg (0.5mg/kg)   Experimental Animals. Jikken Dobutso Iho. Vol. 21, Pg. 88, 1972.
guinea pig LD50 skin 5mg/kg (5mg/kg) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

LUNGS, THORAX, OR RESPIRATION: DYSPNEA		 Toxicology and Applied Pharmacology. Vol. 12, Pg. 536, 1968.
guinea pig LDLo subcutaneous 1mg/kg (1mg/kg) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

LUNGS, THORAX, OR RESPIRATION: DYSPNEA		 Toxicology and Applied Pharmacology. Vol. 12, Pg. 536, 1968.
monkey LD50 oral 300mg/kg (300mg/kg)   "Wirksubstanzen der Pflanzenschutz und Schadlingsbekampfungsmittel," Perkow, W., Berlin, Verlag Paul Parey, 1971-1976Vol. -, Pg. -, 1971/1976.
monkey LDLo intraperitoneal 100mg/kg (100mg/kg) BEHAVIORAL: "HALLUCINATIONS, DISTORTED PERCEPTIONS"

GASTROINTESTINAL: NAUSEA OR VOMITING

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD		 Toxicology and Applied Pharmacology. Vol. 12, Pg. 536, 1968.
monkey LDLo skin 800mg/kg (800mg/kg) BEHAVIORAL: "HALLUCINATIONS, DISTORTED PERCEPTIONS"

GASTROINTESTINAL: NAUSEA OR VOMITING

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD		 Toxicology and Applied Pharmacology. Vol. 12, Pg. 536, 1968.
monkey LDLo subcutaneous 150mg/kg (150mg/kg) BEHAVIORAL: "HALLUCINATIONS, DISTORTED PERCEPTIONS"

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

GASTROINTESTINAL: NAUSEA OR VOMITING		 Toxicology and Applied Pharmacology. Vol. 12, Pg. 536, 1968.
mouse LD50 intraperitoneal 164mg/kg (164mg/kg) BEHAVIORAL: EXCITEMENT

BEHAVIORAL: COMA

LUNGS, THORAX, OR RESPIRATION: RESPIRATORY DEPRESSION		 Toxicology and Applied Pharmacology. Vol. 12, Pg. 536, 1968.
mouse LD50 oral 200mg/kg (200mg/kg)   Oyo Yakuri. Pharmacometrics. Vol. 4, Pg. 463, 1970.
mouse LD50 skin 370mg/kg (370mg/kg)   Experimental Animals. Jikken Dobutso Iho. Vol. 21, Pg. 88, 1972.
mouse LD50 subcutaneous 216mg/kg (216mg/kg) BEHAVIORAL: EXCITEMENT

BEHAVIORAL: COMA

LUNGS, THORAX, OR RESPIRATION: RESPIRATORY DEPRESSION		 Toxicology and Applied Pharmacology. Vol. 12, Pg. 536, 1968.
rabbit LD50 oral 1500ug/kg (1.5mg/kg) SENSE ORGANS AND SPECIAL SENSES: MYDRIASIS (PUPILLARY DILATION): EYE

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES		 Experimental Animals. Jikken Dobutso Iho. Vol. 21, Pg. 88, 1972.
rabbit LD50 skin 1750ug/kg (1.75mg/kg)   Experimental Animals. Jikken Dobutso Iho. Vol. 21, Pg. 88, 1972.
rabbit LDLo intravenous 5mg/kg (5mg/kg) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

LUNGS, THORAX, OR RESPIRATION: DYSPNEA		 Toxicology and Applied Pharmacology. Vol. 12, Pg. 536, 1968.
rat LD50 oral 67mg/kg (67mg/kg)   Sangyo Igaku. Japanese Journal of Industrial Health. Vol. 9, Pg. 563, 1967.
rat LD50 skin 213mg/kg (213mg/kg)   World Review of Pest Control. Vol. 9, Pg. 119, 1970.
rat LD50 subcutaneous 41mg/kg (41mg/kg) BEHAVIORAL: EXCITEMENT

BEHAVIORAL: COMA

LUNGS, THORAX, OR RESPIRATION: RESPIRATORY DEPRESSION		 Toxicology and Applied Pharmacology. Vol. 12, Pg. 536, 1968.

Safety Profile

An experimental teratogen. Other experimental reproductive effects. When heated to decomposition it emits toxic fumes of NOx.