*** CHEMICAL IDENTIFICATION ***
RTECS NUMBER : HA2420000
CHEMICAL NAME : L-Cysteine, N-(2-mercapto-2-methyl-1-oxopropyl)-
CAS REGISTRY NUMBER : 65002-17-7
LAST UPDATED : 199312
DATA ITEMS CITED : 18
MOLECULAR FORMULA : C7-H13-N-O3-S2
MOLECULAR WEIGHT : 223.33
WISWESSER LINE NOTATION : SHX1&1&VMYVQ1SH
COMPOUND DESCRIPTOR : Drug
Reproductive Effector
SYNONYMS/TRADE NAMES :
* Bucillamine
* De-019
* N-(2-Mercaptoisobutyryl)-L-cysteine
* N-(2-Mercapto-2-methyl-1-oxopropyl)-L-cysteine
* N-(2-Mercapto-2-methylpropanoyl)-L-cysteine
* N-(2-Mercapto-2-methylpropionyl)-L-cysteine
* Rimatil
* Thiobutarit
* Tiobutarit
* SA96
*** 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 : 3900 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - lacrimation
Behavioral - changes in motor activity (specific assay)
Lungs, Thorax, or Respiration - cyanosis
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho
Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970-
Volume(issue)/page/year: 14,346,1983
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 353 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - lacrimation
Behavioral - changes in motor activity (specific assay)
Lungs, Thorax, or Respiration - cyanosis
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho
Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970-
Volume(issue)/page/year: 14,346,1983
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Subcutaneous
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 1021 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - lacrimation
Behavioral - changes in motor activity (specific assay)
Lungs, Thorax, or Respiration - cyanosis
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho
Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970-
Volume(issue)/page/year: 14,346,1983
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intravenous
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 1006 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - lacrimation
Behavioral - changes in motor activity (specific assay)
Lungs, Thorax, or Respiration - cyanosis
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho
Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970-
Volume(issue)/page/year: 14,346,1983
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 4500 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - lacrimation
Behavioral - changes in motor activity (specific assay)
Lungs, Thorax, or Respiration - cyanosis
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho
Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970-
Volume(issue)/page/year: 14,346,1983
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 420 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - lacrimation
Behavioral - changes in motor activity (specific assay)
Lungs, Thorax, or Respiration - cyanosis
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho
Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970-
Volume(issue)/page/year: 14,346,1983
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Subcutaneous
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 1090 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - lacrimation
Behavioral - changes in motor activity (specific assay)
Lungs, Thorax, or Respiration - cyanosis
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho
Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970-
Volume(issue)/page/year: 14,346,1983
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intravenous
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 990 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
USXXAM United States Patent Document. (U.S. Patent Office, Box 9,
Washington, DC 20231) Volume(issue)/page/year: #4305958
TYPE OF TEST : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE : Intravenous
SPECIES OBSERVED : Mammal - dog
DOSE/DURATION : 200 mg/kg
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - respiratory stimulation
Gastrointestinal - hypermotility, diarrhea
Gastrointestinal - nausea or vomiting
REFERENCE :
OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180,
Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 29,429,1985
** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 18200 mg/kg/52W-C
TOXIC EFFECTS :
Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol)
Nutritional and Gross Metabolic - changes in metals, not otherwise specified
REFERENCE :
KSRNAM Kiso to Rinsho. Clinical Report. (Yubunsha Co., Ltd., 1-5, Kanda
Suda-Cho, Chiyoda-ku, KS Bldg., Tokyo 101, Japan) V.1- 1960-
Volume(issue)/page/year: 19,429,1985
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 15 gm/kg/30D-I
TOXIC EFFECTS :
Kidney, Ureter, Bladder - other changes in urine composition
Kidney, Ureter, Bladder - changes in bladder weight
Blood - other changes
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho
Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970-
Volume(issue)/page/year: 14,346,1983
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 45500 mg/kg/91D-I
TOXIC EFFECTS :
Blood - changes in erythrocyte (RBC) count
Kidney, Ureter, Bladder - changes in bladder weight
Related to Chronic Data - changes in testicular weight
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho
Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970-
Volume(issue)/page/year: 14,346,1983
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Mammal - dog
DOSE/DURATION : 18 gm/kg/15W-I
TOXIC EFFECTS :
Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol)
Nutritional and Gross Metabolic - changes in metals, not otherwise specified
REFERENCE :
OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180,
Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 29,429,1985
** REPRODUCTIVE DATA **
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - mouse
DOSE : 4800 mg/kg
SEX/DURATION : female 6-15 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - other measures of fertility
Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight
gain)
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho
Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970-
Volume(issue)/page/year: 16,626,1985
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - mouse
DOSE : 1200 mg/kg
SEX/DURATION : female 6-15 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - musculoskeletal system
Reproductive - Effects on Newborn - viability index (e.g., # alive at day 4
per # born alive)
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho
Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970-
Volume(issue)/page/year: 16,626,1985
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - mouse
DOSE : 3600 mg/kg
SEX/DURATION : female 6-15 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - litter size (e.g. # fetuses per litter; measured
before birth)
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho
Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970-
Volume(issue)/page/year: 16,626,1985
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - mouse
DOSE : 840 mg/kg
SEX/DURATION : female 15-21 day(s) after conception
lactating female 21 day(s) post-birth
TOXIC EFFECTS :
Reproductive - Effects on Newborn - behavioral
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho
Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970-
Volume(issue)/page/year: 16,665,1985
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rabbit
DOSE : 3900 mg/kg
SEX/DURATION : female 6-18 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - post-implantation mortality (e.g. dead and/or
resorbed implants per total number of implants)
Reproductive - Fertility - litter size (e.g. # fetuses per litter; measured
before birth)
Reproductive - Effects on Embryo or Fetus - fetal death
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho
Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970-
Volume(issue)/page/year: 16,654,1985
*** END OF RECORD ***