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Answer for the clue "A colorless crystalline nitrogen-containing organic base ", 6 letters:

Alternative clues for the word purine

Word definitions for purine in dictionaries

Wiktionary Word definitions in Wiktionary
n. (context organic compound English) Any of a class of organic heterocyclic compounds composed of fused pyrimidine and imidazole rings that comprise one of the two groups of organic nitrogenous bases (the other being the pyrimidines) and are components ...

WordNet Word definitions in WordNet
n. any of several bases that are derivatives of purine a colorless crystalline nitrogen-containing organic base; the parent compound of various biologically important substances

Wikipedia Word definitions in Wikipedia
A purine is a heterocyclic aromatic organic compound . It consists of a pyrimidine ring fused to an imidazole ring. Purines , which include substituted purines and their tautomers , are the most widely occurring nitrogen-containing heterocycle in nature. ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1898, from German purin (Fischer), said to be from Latin purum , neuter of purus "clean, pure" (see pure ) + Modern Latin uricum "uric acid" + chemical suffix -ine (2).

Usage examples of purine.

Molecular neo-Mendelism is consistent with the rules of gross segregation and assortment, requiring no metaphysical rulesjust the constraints laid down by chemists: purine with pyrimidine, electrons in the lowest energetic state.

A, G, C, and T usually stood for the nucleotides, plus two more named PU-3 and PY-3, indicating an addition purine and pyrimidine.

One structural unit of nucleic acids such as DNA is a purine, a dicyclic nitrogen-containing molecule.

Lanhoff find any evidence of porphyrins, or nitrogen compounds like purines and pyrimidines?

One structural unit of nucleic acids such as DNA is a purine, a dicyclic nitrogen-containing molecule.

Results of cyanogen and nitrile polymerization, including imidazole, purines, pyrimidines.

Science had long known that organic chemistry would come up with the same amino acids, the same purines and pyrimidines under a wide variety of circumstances.

In addition, DNA, which combines a pyrmidine or purine base with a sugar backbone is just one of a whole family of molecules that could carry genetic information in the same type of highly stable helical structure.

Neither DNA nor RNA has appeared, but the building blocks of these large molecules, called purines and pyrimidines, have.