HFBAHeptafluorobutyric Anhydride
HFBAHebrew Free Burial Association
HFBAHigh-Frequency Bekesy Audiometry
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For TFAA or HFBA derivatives, the initial oven temperature was set at 70[degrees]C for 1 min; then increased to 200[degrees]C at the rate of 10[degrees]C/min and to 240[degrees]C at the rate of 20[degrees]C/min.
(c) Abbreviation: AA = acetic anhydrides; HFBA = heptafluorobutyric
Abbreviations: AGE = advanced glycation end product, BAP = bone alkaline phosphatase, BMI = body mass index, DM = diabetes mellitus, ELISA = enzyme-linked immunosorbent assay, HbA1c = hemoglobin A1c, HFBA = heptafluorobutyric acid, HP = hydroxylysylpyridinoline, HPLC = high-performance liquid chromatography, LP = lysylpyridinoline, OA = osteoarthritis, OCN = osteocalcin, PYD = pyridinium, RAGE = receptor for AGE, TKA = total knee arthroplasty, VA = Department of Veterans Affairs.
Organic mobile phase (mobile phase A) consisted of ACN with 1 mL/L FA and 0.1 mL/L HFBA. Aqueous mobile phase (mobile phase B) consisted of reverse osmosis water with the same concentrations of FA and HFBA.
The column was eluted with a two-step linear gradient of 0.1% HFBA in water and 100% C[H.sub.3]CN containing 0.1% HFBA.
The mobile phase consisted of 3 components, solution A (650 mmol/L acetic acid), solution B (100 mmol/L HFBA in A), and solution C (900 mL/L acetonitrile in water).
californica, extracted at 4 [degrees] C in 0.1% HFBA using a Polytron homogenizer, and sonicated.
The mass spectral characteristics of the HFBA derivatives have been described by Thurman et al.
A pear-shaped flask containing 120 mg of L-proline [S-(-)-proline] was placed in an ice bath, and 3 mL of diethyl ether and 0.5 mL of HFBA were subsequently added.
Heptafluorobutyric acid (HFBA) and sodium borohydride were purchased from Sigma.