{"id":10524,"date":"2026-03-04T05:58:47","date_gmt":"2026-03-04T05:58:47","guid":{"rendered":"https:\/\/longchangextracts.com\/adenine-cas-73-24-5-the-essential-purine-base-for-energy-and-genetic-research\/"},"modified":"2026-08-04T08:28:41","modified_gmt":"2026-08-04T08:28:41","slug":"adenine-cas-73-24-5-the-essential-purine-base-for-energy-and-genetic-research","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/es\/adenine-cas-73-24-5-the-essential-purine-base-for-energy-and-genetic-research\/","title":{"rendered":"What Is Adenine? Purine Base, Formula and Role in DNA and RNA"},"content":{"rendered":"
\n

What Is Adenine? Purine Base, Formula and Role in DNA and RNA<\/h1>\n

Adenine<\/strong> is a purine nucleobase, not an amino acid, protein, nucleoside or nucleotide. Public chemical records identify it as CAS 73-24-5, molecular formula C5<\/sub>H5<\/sub>N5<\/sub> and molecular weight about 135.13 g\/mol. Adenine is represented by the letter A in DNA and RNA. When adenine is attached to ribose it forms the distinct nucleoside adenosine; adding phosphate group(s) produces adenosine nucleotides such as AMP, ADP and ATP.<\/p>\n

Adenine identity at a glance<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Preferred name<\/th>\nAdenine<\/td>\n<\/tr>\n
CAS Registry Number<\/th>\n73-24-5<\/td>\n<\/tr>\n
Chemical class<\/th>\nPurine nucleobase; member of the 6-aminopurines<\/td>\n<\/tr>\n
IUPAC name<\/th>\n9H-purin-6-amine<\/td>\n<\/tr>\n
F\u00f3rmula molecular<\/th>\nC5<\/sub>H5<\/sub>N5<\/sub><\/td>\n<\/tr>\n
Peso molecular<\/th>\n135.13 g\/mol (NIST: 135.1267)<\/td>\n<\/tr>\n
PubChem CID<\/th>\n190<\/td>\n<\/tr>\n
ChEBI ID<\/th>\nCHEBI:16708<\/td>\n<\/tr>\n
EC number<\/th>\n200-796-1<\/td>\n<\/tr>\n
InChIKey<\/th>\nGFFGJBXGBJISGV-UHFFFAOYSA-N<\/td>\n<\/tr>\n
ChEBI SMILES<\/th>\nNc1ncnc2ncnc12<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Identity references: NIST Chemistry WebBook<\/a>, PubChem CID 190<\/a> y EMBL-EBI ChEBI CHEBI:16708<\/a>. These sources establish public identity and classification fields; they do not establish a current Longchang specification, purity, grade, lot result, inventory or suitability.<\/p>\n

Is adenine a purine?<\/h2>\n

Yes. ChEBI classifies adenine as both a purine nucleobase and a member of the 6-aminopurines. Its fused purine ring contains a six-membered ring joined to a five-membered ring, with an amino group at carbon 6. This classification is why \u201cadenine is a purine\u201d is correct while \u201cadenine is an amino acid\u201d is not.<\/p>\n

What is the role of adenine in DNA and RNA?<\/h2>\n

The U.S. National Human Genome Research Institute lists adenine among the four bases used in DNA and among the four bases used in RNA. In double-stranded DNA, adenine pairs with thymine. In RNA, uracil replaces thymine in the base set. This biological context refers to adenine as the base component of nucleotides within nucleic-acid polymers\u2014not to a claim that free Adenine CAS 73-24-5 is a medicine, energy supplement or finished biological product.<\/p>\n

Genome references: NHGRI DNA glossary<\/a>, NHGRI RNA glossary<\/a> y NHGRI nucleotide glossary<\/a>.<\/p>\n

Adenine, adenosine and ATP are not the same substance<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n
Term<\/th>\nWhat it is<\/th>\nKey distinction<\/th>\n<\/tr>\n<\/thead>\n
Adenine<\/td>\nPurine nucleobase; CAS 73-24-5<\/td>\nThe base alone; formula C5<\/sub>H5<\/sub>N5<\/sub><\/td>\n<\/tr>\n
Adenosine<\/td>\nPurine ribonucleoside<\/td>\nAdenine attached to ribose; ChEBI records CAS 58-61-7<\/td>\n<\/tr>\n
AMP<\/td>\nAdenosine monophosphate<\/td>\nAdenosine with one phosphate group<\/td>\n<\/tr>\n
ADP<\/td>\nAdenosine diphosphate<\/td>\nAdenosine nucleotide with two phosphate groups<\/td>\n<\/tr>\n
ATP<\/td>\nAdenosine triphosphate<\/td>\nAdenosine nucleotide with three phosphate groups<\/td>\n<\/tr>\n
Adenine derivative or analog<\/td>\nA related but chemically modified substance<\/td>\nIts properties, hazards and biological activity cannot be assigned to adenine itself<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

ChEBI defines adenosine<\/a> as adenine attached to a ribofuranose moiety. That relationship does not make the two names interchangeable in a specification, analytical record or RFQ.<\/p>\n

Why does the adenine formula contain no oxygen?<\/h2>\n

Free adenine has the formula C5<\/sub>H5<\/sub>N5<\/sub>, so it contains carbon, hydrogen and nitrogen but no oxygen. Adenosine and adenine nucleotides contain oxygen because the ribose and phosphate components add oxygen atoms. A formula search must therefore be matched to the exact chemical entity rather than to the wider \u201cadenine-containing molecule\u201d family.<\/p>\n

What does \u201cVitamin B4\u201d mean?<\/h2>\n

NIST lists \u201cVitamin B4\u201d among historical or alternative names associated with Adenine CAS 73-24-5. A legacy synonym is not, by itself, a current nutrition classification, health claim, permitted supplement claim or evidence that a supplied lot is suitable for food use. Use \u201cAdenine\u201d and CAS 73-24-5 as the controlled procurement identity.<\/p>\n

Claims removed from the earlier page<\/h2>\n
\n\n\n\n\n\n\n\n\n\n
Earlier statement<\/th>\nWhy it is not retained<\/th>\nEvidence required before reuse<\/th>\n<\/tr>\n<\/thead>\n
Adenine supports energy levels or provides health benefits<\/td>\nConfuses free adenine with ATP biology and implies a human benefit<\/td>\nExact product form, route, dose, intended market and competent medical\/regulatory substantiation<\/td>\n<\/tr>\n
Adenine treats metabolic conditions or acts as an antiviral<\/td>\nConfuses adenine with distinct drugs, analogs or derivatives<\/td>\nExact active substance, primary clinical evidence, approved labeling and jurisdiction-specific review<\/td>\n<\/tr>\n
Generally recognized as safe for research and pharmaceutical applications<\/td>\nResearch handling and regulated-product suitability are different questions; no applicable determination was cited<\/td>\nCurrent SDS, intended use, exposure context and applicable regulatory basis<\/td>\n<\/tr>\n
Cell-culture, supplement or pharmaceutical grade is available<\/td>\nNo current controlled grade specification or release evidence was shown<\/td>\nCurrent specification, methods, applicable lot COA and intended-use qualification<\/td>\n<\/tr>\n
High purity, reliable supply, competitive pricing or bulk availability<\/td>\nNo dated specification, inventory or quotation supported the promise<\/td>\nCurrent documents and a destination-specific quotation<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Choose the next Adenine page by intent<\/h2>\n