炔雌醇甲醚一种合成的雌激素，化学式为c21h26o2，与。
A synthetic estrogen, C21H26O2, used in combination with a progestin in oral contraceptive preparations.
一种可燃性液体，化学式为C2H 5cho，用于塑料和橡胶化工品的生产。
A flammable liquid, C2H 5cho, used in the manufacture of plastics and rubber chemicals.
颈基嘌呤一种含硫类似物，化学式为c5h4n4s，是一种能干扰嘌呤的合成的。
A purine analogue, C5H4N4S, that acts as an antimetabolite by interfering with purine synthesis, used primarily in the treatment of acute leukemia.
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