*** CHEMICAL IDENTIFICATION ***
RTECS NUMBER : TH8890000
CHEMICAL NAME : Phthalazine,
1-(2-(1,3-dimethyl-2-butenylidene)hydrazino)-
CAS REGISTRY NUMBER : 36798-79-5
LAST UPDATED : 199806
DATA ITEMS CITED : 12
MOLECULAR FORMULA : C14-H16-N4
MOLECULAR WEIGHT : 240.34
WISWESSER LINE NOTATION : T66 CNNJ BMNUY1&1UY1&1
COMPOUND DESCRIPTOR : Drug
Reproductive Effector
SYNONYMS/TRADE NAMES :
* Budralazine
* Buterazine
* 1-(2-(1,3-Dimethyl-2-butenylidene)hydrazino)phthalazine
* DJ-1461
* Mesityl oxide (1-phthalazinyl)hydrazone
* 4-Methyl-3-penten-2-one (1-phthalazinyl)hydrazone
* 1(2H)-Phthalazinone (1,3-dimethyl-2-butenylidene)hydrazone
*** 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 : 620 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - chromodacryorrhea
Behavioral - somnolence (general depressed activity)
Nutritional and Gross Metabolic - body temperature decrease
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E.
First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year:
44,431,1978
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 3570 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - chromodacryorrhea
Behavioral - somnolence (general depressed activity)
Nutritional and Gross Metabolic - body temperature decrease
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E.
First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year:
44,431,1978
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Subcutaneous
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : >4 gm/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - ptosis
Behavioral - altered sleep time (including change in righting reflex)
Nutritional and Gross Metabolic - body temperature decrease
REFERENCE :
YAKUD5 Gekkan Yakuji. Pharmaceuticals Monthly. (Yakugyo Jihosha, Inaoka
Bldg., 2-36 Jinbo-cho, Kanda, Chiyoda-ku, Tokyo 101, Japan) V.1- 1959-
Volume(issue)/page/year: 24,2239,1982
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 1820 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - ptosis
Behavioral - somnolence (general depressed activity)
Nutritional and Gross Metabolic - body temperature decrease
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E.
First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year:
44,431,1978
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 4020 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - ptosis
Behavioral - somnolence (general depressed activity)
Nutritional and Gross Metabolic - body temperature decrease
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E.
First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year:
44,431,1978
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Subcutaneous
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 355 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
NIIRDN Drugs in Japan (Ethical Drugs). (Yakugyo Jiho Co., Ltd., Tokyo,
Japan) Volume(issue)/page/year: -,1099,1995
** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 3600 mg/kg/5W-I
TOXIC EFFECTS :
Blood - normocytic anemia
Blood - changes in other cell count (unspecified)
Nutritional and Gross Metabolic - weight loss or decreased weight gain
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E.
First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year:
44,431,1978
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 18720 mg/kg/26W-I
TOXIC EFFECTS :
Blood - normocytic anemia
Nutritional and Gross Metabolic - weight loss or decreased weight gain
Related to Chronic Data - death
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E.
First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year:
44,431,1978
** REPRODUCTIVE DATA **
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE : 55 mg/kg
SEX/DURATION : female 7-17 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Newborn - behavioral
Reproductive - Effects on Newborn - physical
REFERENCE :
OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180,
Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 21,321,1981
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE : 1100 mg/kg
SEX/DURATION : female 7-17 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - musculoskeletal system
REFERENCE :
OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180,
Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 21,321,1981
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE : 1350 mg/kg
SEX/DURATION : female 17-22 day(s) after conception
lactating female 21 day(s) post-birth
TOXIC EFFECTS :
Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight
gain)
REFERENCE :
OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180,
Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 21,331,1981
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rabbit
DOSE : 65 mg/kg
SEX/DURATION : female 6-18 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Embryo or Fetus - extra-embryonic structures
(e.g., placenta, umbilical cord)
REFERENCE :
OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180,
Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 21,343,1981
*** END OF RECORD ***