scholarly journals Infrared Spectrum of α-Aminoisobutyric Acid and the Assignment of the Vibrational Frequencies

1959 ◽  
Vol 32 (10) ◽  
pp. 1044-1050 ◽  
Author(s):  
Masamichi Tsuboi ◽  
Tadao Takenishi
Keyword(s):  
Infrared Spectrum ◽  
Vibrational Frequencies ◽  
Aminoisobutyric Acid

scholarly journals Theoretical investigation of the infrared spectrum of small polyynes

2018 ◽  
Vol 20 (8) ◽  
pp. 5501-5508 ◽  
Author(s):  
Kirstin D. Doney ◽  
Dongfeng Zhao ◽  
John F. Stanton ◽  
Harold Linnartz
Keyword(s):  
Infrared Spectrum ◽  
Theoretical Investigation ◽  
Vibrational Frequencies

The ro-vibrational parameters of small polyynes are calculated at the CCSD(T)/ANO1 level, including the first anharmonic vibrational frequencies of tetraacetylene.

Fourier transform infrared spectrum of 13C32S2 in the 3v3 band region

1996 ◽  
Vol 89 (4) ◽  
pp. 1145-1155
Author(s):  
JACQUES WALRAND ◽  
GHISLAIN BLANQUET ◽  
JEAN-FRANCOIS BLAVIER ◽  
HARALD BREDOHL ◽  
IWAN DUBOIS
Keyword(s):  
Fourier Transform ◽  
Infrared Spectrum ◽  
Fourier Transform Infrared ◽  
Band Region

The far infrared spectrum of H2O2 observed and calculated rotational levels of the torsional states : (n, τ) = (0, 1), (0, 3) and (1, 1)

1988 ◽  
Vol 49 (11) ◽  
pp. 1901-1910 ◽  
Author(s):  
F. Masset ◽  
L. Lechuga-Fossat ◽  
J.-M. Flaud ◽  
C. Camy-Peyret ◽  
J.W.C. Johns ◽  
...  
Keyword(s):  
Infrared Spectrum ◽  
Far Infrared

DETERMINATION OF MICRO-AMOUNTS OF 5β-PREGNAN-3α-OL-20-ONE IN URINE USING INFRARED-SPECTROMETRY

1962 ◽  
Vol 41 (2) ◽  
pp. 234-246 ◽  
Author(s):  
H. J. van der Molen
Keyword(s):  
Infrared Spectrum ◽  
Quantitative Determination ◽  
Acid Hydrolysis ◽  
Chromatographic Separation ◽  
Pure Form ◽  
Infrared Spectrometry ◽  
Hydrolysis Of

ABSTRACT A procedure for the quantitative determination of 5β-pregnan-3α-ol-20-one in urine is described. After acid hydrolysis of the pregnanolone-conjugates in urine, the free steroids are extracted with toluene. Pregnanolone is isolated in a pure form as its acetate; after chromatographic separation of the free steroids on alumina, the fraction containing pregnanolone is acetylated and rechromatographed on alumina. Quantitative determination of the isolated pregnanolone-acetate is carried out with the aid of the infrared spectrum recorded by a micro KBr-wafermethod. The reliability of the method under various conditions is discussed under the headings, specificity, accuracy, precision and sensitivity. It is possible to determine 30–40 μg pregnanolone in a 24-hours urine portion with a precision of 25%.

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