A pharmacologically acceptable acid addition salt of DC-52 with 0.5-2.0 equivalent weight of inorganic acid, sulfonic acid, acidic amino acid, citric acid, transaconitic acid, .alpha.-ketoglutaric acid, itaconic acid, malonic acid or ascorbic acid on the basis of DC-52, having the same degree of antitumor activity as DC-52, is superior to DC-52 in stability at powdering or at preservation.
一种药理学上可接受的DC-52酸加成盐,基于DC-52,其含有0.5-2.0当量的
无机酸、
磺酸、酸性
氨基酸、
柠檬酸、转顺式顺
柠檬酸、α-酮
戊二酸、
顺丁烯二酸、
丙二酸或
抗坏血酸,具有与DC-52相同的抗肿瘤活性,且在粉化或保存时稳定性优于DC-52。