Propionyl


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Pro´pi`o`nyl


n.1.(Chem.) The hypothetical radical C3H5O, regarded as the essential residue of propionic acid and certain related compounds.
References in periodicals archive ?
In subsequent laboratory tests, liquid chromatography-tandem mass spectrometry showed elevated blood level of propionyl carnitine (C3: 7.927 [micro]mol/L; normal range: 0-5.140 [micro]mol/L) and elevated C3/acetylcarnitine (C2) ratio (0.739; normal range: 0.020-0.290).
An aqueous solution of HN[O.sub.3] (nitric acid) was treated with the sample followed by refluxing for 12 h, later polyethylene glycol (PEG1500N) or poly propionyl ethyleneimine-co ethyleneimine was reacted with the sample, and the passivated C-dots were highly photoluminescent, having size of about 5 nm.
LDHA, lactate dehydrogenase A; LDHB, lactate dehydrogenase B; PDHA1, pyruvate dehydrogenase (lipoamide) alpha 1; DLAT, dihydrolipoamide S-cetyltransferase; DLD, dihydrolipoamide dehydrogenase; GK, glycerol kinase; GPD1, glycerol-3-phosphate dehydrogenase 1; GPD2, glycerol -3-phosphate dehydrogenase 2; ACSS3, acyl CoA synthetase short chain family member 3; PCCA, propionyl CoA carboxylase alpha; PCCB, propionyl CoA carboxylase beta; MCEE, methylmalonyl CoA epimerase; MUT, methylmalonyl CoA mutase.
He said: "Diacetyl and also acetyl propionyl have been linked to popcorn lung, so-called because it is a flavouring agent that gives popcorn a buttery taste and has been linked to a lung disease Bronchiolitis Obliterans, which is not dissimilar to COPD in those exposed to it through work.
The composites, modified by an equimolar solution of propionyl chloride and acryloyl chloride, had an elastic modulus > 100 MPa above 100[degrees]C and an ion conductivity of around 5 x [10.sup.-5] S [cm.sup.-1] at 25[degrees]C.
3Methyl-1-phenyl-2-pyrazolin-5-one, propionyl chloride, and butyryl chloride were purchased from Sigma Aldrich and used as received for the synthesis of the 4-acylpyrazolone precursors.
It is caused by a reduction in the activity of enzyme propionyl coenzyme A carboxylase (PCC).
One novel form of carnitine known as propionyl -L-carnitine helps regulate levels of adenosine triphosphate (ATP)--the primary source of energy for all cellular processes--and can improve physical performance and reduce general fatigue.
Some sweet flavors such as toffee, butter, milk or chocolate contain diacetyl and acetyl propionyl [31].
Health Canada also announced a proposal to amend Schedule VI to the CDSA and regulations to amend the schedule to the Precursor Control Regulations to add chemicals used in the production of fentanyl (propionyl chloride, 1-Phenethyl-4-piperidone and its salts, 4Piperidone and its salts, Norfentanyl (N-phenyl-N-piperidin-4-ylpropanamide) and its salts, 1Phenethylpiperidin-4-ylidenephenylamine and its salts; and N-Phenyl-4-piperidinamine and its salts.
CAP containing 0.6 wt% acetyl, 42.5 wt% propionyl with average [M.sub.N] 15,000 (GPC), and PEG (molecular weight of 600 g/mol) were purchased from Aldrich.