*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : EM9252400 CHEMICAL NAME : 2-Butenoic acid, 3-methyl-, 1-(1,4-dihydro-5,8-dihydroxy-1,4-dioxo-2-naphthalenyl )-4-methyl- 3-pentenyl ester, (+)- CAS REGISTRY NUMBER : 24502-79-2 LAST UPDATED : 198208 DATA ITEMS CITED : 1 MOLECULAR FORMULA : C21-H22-O6 MOLECULAR WEIGHT : 370.43 WISWESSER LINE NOTATION : L66 BV EVJ CY2UY1&1&OV1UY1&1 GQ JQ COMPOUND DESCRIPTOR : Drug SYNONYMS/TRADE NAMES : * beta,beta-Dimethylacrylshikonin * Dmask *** HEALTH HAZARD DATA *** ** ACUTE TOXICITY DATA ** TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intraperitoneal SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : 48 mg/kg TOXIC EFFECTS : Lungs, Thorax, or Respiration - dyspnea REFERENCE : CYLPDN Zhongguo Yaoli Xuebao. Acta Pharmacologica Sinica. Chinese Journal of Pharmacology. (China International Book Trading Corp., POB 2820, Beijing, Peop. Rep. China) V.1- 1980- Volume(issue)/page/year: 1,60,1980 *** END OF RECORD ***