Pyridine
[pir-i-deen, -din] /ˈpɪr ɪˌdin, -dɪn/
noun, Chemistry.
1.
a colorless, flammable, liquid organic base, C 5 H 5 N, having a disagreeable odor, usually obtained from coal or synthesized from acetaldehyde and ammonia: used chiefly as a solvent and in organic synthesis.
/ˈpɪrɪˌdiːn/
noun
1.
a colourless hygroscopic liquid with a characteristic odour. It is a basic heterocyclic compound containing one nitrogen atom and five carbon atoms in its molecules and is used as a solvent and in preparing other organic chemicals. Formula: C5H5N
pyridine pyr·i·dine (pĭr’ĭ-dēn’)
n.
A flammable, colorless or yellowish liquid base that results from the dry distillation of organic matter containing nitrogen, has a penetrating odor, and is used in analytical chemistry and in the manufacture of various drugs and vitamins.
py·rid’ic (pī-rĭd’ĭk) adj.
pyridine
(pĭr’ĭ-dēn’)
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- Pyridoxal
/ˌpɪrɪˈdɒksəl/ noun 1. (biochem) a naturally occurring derivative of pyridoxine that is a precursor of a coenzyme (pyridoxal phosphate) involved in several enzymic reactions. Formula: (CH2OH)(CHO)C5HN(OH)(CH3) pyridoxal pyr·i·dox·al (pĭr’ĭ-dŏk’səl) n. An aldehyde that is one of several active forms of pyridoxine and is important in amino acid synthesis.
- Pyridoxal 5-phosphate
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- Pyridoxamine
/ˌpɪrɪˈdɒksəmiːn/ noun 1. (biochem) a metabolic form of pyridoxine pyridoxamine pyr·i·dox·a·mine (pĭr’ĭ-dŏk’sə-mēn’) n. A crystalline amine that is one of several active forms of pyridoxine and is important in protein metabolism.