✦ LIBER ✦

Stability of the natural insecticide azadirachtin in aqueous and organic solvents

✍ Scribed by Jarvis, Andrew P.; Johnson, Shaun; Morgan, E. David

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 218 KB
Volume: 53
Category: Article
ISSN: 1526-498X
DOI: 10.1002/(sici)1096-9063(199807)53:3<217::aid-ps766>3.0.co;2-9

No coin nor oath required. For personal study only.

✦ Synopsis

The natural insecticide azadirachtin is most stable in mildly acidic aqueous solutions between pH 4 and 6 at room temperature. It is unstable in mildly alkaline and strongly acidic solutions. It is stable when stored in neutral organic solvents at room temperature for months. While it is relatively stable to heating in the seeds or as a pure solid, it is rapidly destroyed or altered by heating in aqueous solution and methanol. In methanol at 90¡C it is quantitatively converted to 3-acetyl-1-tigloylazadirachtinin.

1998 SCI (

📜 SIMILAR VOLUMES

Free volume model and diffusion of organ

Free volume model and diffusion of organic solvents in natural rubber

✍ C. J. Guo; D. De Kee; B. Harrison 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 404 KB 👁 1 views

The stability of engineered thermostable

The stability of engineered thermostable neutral proteases from Bacillus stearothermophilus in organic solvents and detergents

✍ Johanna Mansfeld; Renate Ulbrich-Hofmann 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 159 KB

## Abstract Engineered extremely thermostable variants of the thermolysin‐like protease from __Bacillus stearothermophilus__ possessing an introduced disulfide bond G8C/N60C (double mutant, DM) and six additional amino acid substitutions in the exposed loop region 56–69 (Boilysin, BLN) have been pr

Helix-coil stabilities of L-alanine and

Helix-coil stabilities of L-alanine and L-leucine in mixed organic solvents

✍ S. Sridhara; V. S. Ananthanarayanan; G. T. Taylor; H. A. Scheraga 📂 Article 📅 1977 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 190 KB

ChemInform Abstract: Kinetic Studies of

ChemInform Abstract: Kinetic Studies of Organic Peroxyl Radicals in Aqueous Solutions and Mixed Solvents

✍ Z. B. ALFASSI; R. E. HUIE; P. NETA 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 24 KB

Effect of crown ethers on structure, sta

Effect of crown ethers on structure, stability, activity, and enantioselectivity of subtilisin Carlsberg in organic solvents

✍ Angélica M. Santos; Michael Vidal; Yamaris Pacheco; Joel Frontera; Carlos Báez; 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 211 KB 👁 2 views

## Abstract Colyophilization or codrying of subtilisin Carlsberg with the crown ethers 18‐crown‐6, 15‐crown‐5, and 12‐crown‐4 substantially improved enzyme activity in THF, acetonitrile, and 1,4‐dioxane in the transesterification reactions of __N__‐acetyl‐L‐phenylalanine ethylester and 1‐propanol a

Kinetics of racemization of (+)- and (−)

Kinetics of racemization of (+)- and (−)-diethylpropion: Studies in aqueous solution, with and without the addition of cyclodextrins, in organic solvents and in human plasma

✍ Boris Mey; Hanns Paulus; Erich Lamparter; Gottfried Blaschke 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 135 KB 👁 1 views

The configurational stability of (+)-and (-)-diethylpropion [(+)-and (-)-2-(diethyl)-1-phenyl-1-propanone or (+)-and (-)-DEP] was investigated systematically from chemical, pharmaceutical, and pharmacological aspects. The enantiomeric ratio was monitored directly with a recently developed stability-