Navigation Links
Pyrimidine



Pyrimidine
Chemical namePyrimidine
Chemical formulaC4H4N2
Molecular mass80.09 g/mol
Density1.016 g/ml
Melting point20 - 22 C
Boiling point123 - 124 C
CAS number289-95-2
SMILESC1=NC=NC=C1


Pyrimidine is a heterocyclic aromatic organic compound, which is similar to benzene and pyridine and that contains two nitrogen atoms at positions 1 and 3 of the six-membered ring.

Three nucleobases found in nucleic acids, namely cytosine, thymine, and uracil, are pyrimidine derivatives. In DNA and RNA, these bases form hydrogen bonds with their complementary purines.

purine  pyrimidine
   A         T
   G         C

In RNA, the complement of A is U instead of T:

purine  pyrimidine
   A         U
   G         C
Thymine Uracil Cytosine

These hydrogen bonding modes are for classical Watson-Crick base pairing. Other hydrogen bonding modes are available in both DNA and RNA, although the additional 2'-hydroxyl group of RNA expands the configurations through which RNA can form hydrogen bonds.

See also


'"/>


(Date:4/20/2015)... -- Huntington Memorial Hospital is the first facility in ... wireless monitoring sensor to manage heart failure (HF). The ... heart failure monitoring device that has been proven to ... manage heart failure. The CardioMEMS HF System ... artery (PA) during a non-surgical procedure to directly measure ...
(Date:4/14/2015)... , April 14, 2015 NXT-ID, Inc. ... biometric authentication company focused on the growing mobile commerce ... nominated for the 2015 New York Design Awards under ... Design100, New York City Design Awards are part of ... on over 2,500 ratings from the marketplace, industry and ...
(Date:4/9/2015)... , April 9, 2015 Synaptics Inc. (NASDAQ: ... solutions, announced today that it will report financial results ... April 23, 2015, after the close of market. The ... and investors at 2:00 p.m. PT (5:00 p.m. ET), ... To participate on the live call, analysts and ...
Breaking Biology News(10 mins):Huntington Memorial Hospital Becomes First in the San Gabriel Valley to Offer Patients a New Heart Failure Monitoring Solution 2Huntington Memorial Hospital Becomes First in the San Gabriel Valley to Offer Patients a New Heart Failure Monitoring Solution 3NXT-ID's Wocket Smart Wallet Nominated for 2015 New York Design Awards in 'Product Design- Technology' 2NXT-ID's Wocket Smart Wallet Nominated for 2015 New York Design Awards in 'Product Design- Technology' 3Synaptics to Report Third Quarter Results on April 23 2
... Biology, researchers report using DNA from tissues samples collected in 1955 ... ( Orcinus orca ). In 1955, a pod ... a skeleton was saved in a museum in Wellington. Photographs were ... form of killer whale, characterized by a very small white eye-patch ...
... A decade-long JDRF-funded study led by the Institute ... providing a deeper understanding of the link between autoantibodies ... highlighting the importance of pre-diabetes research into possible preventions ... Autoantibodies and Risk of Progression to Diabetes in Children," ...
... 19, 2013  New York College of Health Professions announces the ... Office for detecting biometric changes through smart phones, apps and ... or killed. This patent is part of an ... College of Health Professions. Lisa Pamintuan , ...
Cached Biology News:New data on islet autoantibodies in young children defines early type 1 diabetes development 2New Technology Using Biometrics Detects If Security Guards Are Attacked, Injured Or Killed 2New Technology Using Biometrics Detects If Security Guards Are Attacked, Injured Or Killed 3New Technology Using Biometrics Detects If Security Guards Are Attacked, Injured Or Killed 4
Other biology definitionOther Tags