Chlorination studies. IV - The reaction of aqueous hypochlorous acid with pyrimidine and purine bases.
Explore the source record for details and available documents.
Hoyano, Y.↗
Engineering topics
Halpern, B.
Publications and source records attributed to Halpern, B..
Chlorination studies. I - The reaction of aqueous hypochlorous acid with cytosine.
Explore the source record for details and available documents.
Patton, W.↗
The steric analysis of aliphatic amines with two asymmetric centres by gas-liquid chromatography of diastereoisomeric amides.
Explore the source record for details and available documents.
Pereira, W. E., Jr.↗
Search for organic compounds in the lunar dust from the Sea of Tranquillity
Biogeochemical analysis on lunar dust sample for organic compounds
Barghoorn, E.↗
Electron impact promoted fragmentation of alkyl-N-(1-Phenylethyl)-carbamates of primary, secondary and tertiary alcohols
Mass spectra of alkyl carbamates derived from primary, secondary, and teriary alcohols by use of deuterium labeling and high resolution mass spectroscopy
Pereira, W. E.↗
A rapid and quantitative gas chromatographic analysis for phenylalanine in serum
Quantitative determination of phenylalanine in serum by gas-liquid chromatographic analysis method
Halpern, B.↗
Lunar pigments - Porphyrin-like compounds from an Apollo 12 sample
Porphyrin-like pigments in Apollo 12 lunar soil sample 12023, using spectral analysis involving fluorescence, absorption and magnetic circular dichroism spectrometry
Bunnenberg, E.↗
Electron-impact promoted fragmentation of alkyl-n-/1-phenylethyl/-carbamates of primary, secondary and tertiary alcohols.
The mass spectra of twenty alkyl carbamates derived from primary, secondary, and tertiary alcohols are investigated, using deuterium labeling and high-resolution mass spectrometry. Several of the primary and secondary alcohol derivatives are found to yield an ion formally equivalent to the product ion of a McLafferty rearrangement. Deuterium labeling, however, revealed a lack, in these carbamate derivatives, of the usual site specificity associated with the McLafferty rearrangement. A double hydrogen rearrangement process was observed in the mass spectra of several carbamates derived from tertiary alcohols.
Pereira, W. E.↗
Biogeochemistry of molecular complexes of amino acids with chlorins and porphyrins
Porphyrins and amino acids chemical bonding under geochemically plausible conditions, considering diagenesis of biogenic compounds and life processes prebiotic chemical evolution
Halpern, B.↗
A computer operated mass spectrometer system
Computer controlled mass spectrometer system, processing spectral information data for on-line graphic system output
Bacon, V. A.↗
Search for porphyrins in lunar fines from Apollo 11 and 12 Final report
Determining presence of porphyrins in Apollo 11 and 12 soil samples by fluorescence spectrometry and analytical demetallation
Halpern, B.↗
GLC of Serum Phenylalanine - a Gas Liquid Chromatographic Method for the Determination of Phenylalanine Serum
Gas liquid chromatographic method for quantitative analysis of phenylalanine in serum
Close, V. A.↗
Determination of the stereospecific hydrolytic action of pepsin by nuclear magnetic resonance spectroscopy
Stereospecificity and reaction rate of enzymatic hydrolysis of racemic substrate by pepsin determined by nuclear magnetic resonance spectroscopy
Halpern, B.↗
Carbon compounds in lunar fines from Mare Tranquillitatis. II - Search for porphyrins
Apollo 11 lunar fines porphyrin-like pigments content demonstrated by fluorescence spectrometry and analytical demetallation, suggesting rocket exhaust source
Bunnenberg, E.↗
The use of R-/plus/-1-phenylethylisocyanate in the optical analysis of asymmetric secondary alcohols by gas chromatography
Phenylalkylcarbinol steric purity determination from asymmetric secondary alcohol derivatives separation by gas chromatographic resolution
Bacon, V. A.↗
Peptide sequencing by low resolution mass spectrometry. I - The use of acetylacetonyl derivatives to identify N-terminal residues
Mass spectrometric sequence determination of oligopeptides via acetylacetonyl derivatives, giving reliable results with small peptides
Bacon, V.↗
Quantitative determination of biologically important thiols and disulfides by gas-liquid chromatography
Quantitative and qualitative analysis of biochemically and radiobiologically important thiols and disulfides via gas-liquid chromatography
Bacon, V. A.↗
Transesterification with an anion-exchange resin.
Transesterification of amino acid peptide alkyl and fatty acid esters by treatment with anion- exchange resin
Close, V.↗