xan.thine
n.(名词)A yellowish-white, crystalline purine base, C5H 4N 4O 2, that is a precursor of uric acid and is found in blood, urine, muscle tissue, and certain plants. 黄嘌呤:一种黄白色结晶的嘌呤硷,C5H 4N 4O 2,它是尿酸的前身,常见于血液、尿液、肌肉组织和某些植物中 Any of several derivatives of this compound.此类化合物的各种衍生物