1.
Caffeine, a purine alkaloid, is a key component of tea and coffee.
咖啡因是一种嘌呤生物碱,存在于茶和咖啡中。
2.
any of several bases that are derivatives of purine.
从嘌呤衍生出来的许多碱。
3.
Determination of Hypoxanthine,Xanthine and Adenine Extracts in Four Animal Drugs by HPLC
4种动物药水提液中3种嘌呤碱HPLC法测定
4.
a base found in DNA and RNA and derived from pyrimidine; pairs with guanine.
DNA和RNA中的碱，由嘧啶衍生而来，与鸟嘌呤成对。
5.
Synthesis of Novel C6 Modified Purine Nucleoside Derivetives;
新型C6修饰嘌呤核苷衍生物的合成
6.
The Theoretic Study of the Structure and Aromaticity of Purines
嘌呤衍生物的结构及性质的理论研究
7.
Synthesis of 2-chloro-6-N-aryl substituted purine derivatives
2-氯-6-N-芳基取代嘌呤衍生物的合成
8.
"Guanine: Organic compound of the purine family, often called a Base, consisting of two rings, each containing Both nitrogen and carbon atoms, and an amino group."
鸟嘌呤:嘌呤类的有机化合物,常称为碱基,包含二个环,各含氮原子和碳原子,还有一个氨群。
9.
Synthesis and Molecular Recognition of the Adenine-containing Derivative of P-tertbutylcalix[4]arene;
含腺嘌呤的杯芳烃衍生物的合成表征及其对核苷碱基的分子识别性质的研究
10.
Synthesis of Purine-type Derivatives and Plant Growth Regulator Activitive Test;
嘌呤型化合物的合成及植物生长调节活性测试
11.
Synthesis and Biological Evaluation of Novel Purinoxyphenoxypropionate Compounds
含嘌呤环的APP类化合物的合成与生物活性
12.
Studies on Novel Synthesis and Properties of 8-Azaguanine Derivatives;
8-氮杂鸟嘌呤衍生物的合成新方法与性质研究
13.
Synthesis and Properties of Purine Nucleoside and Nucleotide Derivatives;
嘌呤核苷（酸）衍生物的合成及其性质研究
14.
Synthesis and Antibacterial Activity of 6-Substituted Amino Purine Derivatives
6-取代胺基嘌呤衍生物的制备及抗菌活性研究
15.
Study on Changes of Heroin Addicted Rats' Purine Nucleotide and Glutamate Metabolism in Brain and Biological Effects of Purine Nucleotide Compensation;
海洛因依赖动物脑嘌呤核苷酸及谷氨酸代谢变化与嘌呤核苷酸补偿的生物学效应研究
16.
a base found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine.
RNA中的一种碱（DNA中没有），由嘧啶衍生而来，与腺嘌呤成对。
17.
a base found in DNA (but not in RNA) and derived from pyrimidine; pairs with adenine.
DNA中的一种碱（RNA中没有），由嘧啶衍生而来，与腺嘌呤成对。
18.
a purine base found in DNA and RNA; pairs with cytosine.
DNA和RNA中的嘌呤碱，与胞核嘧啶成对。