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| | (+)-Abscisic acid Basic information |
| | (+)-Abscisic acid Chemical Properties |
| Melting point | 188 °C | | alpha | D20 +411.1° (c = 1 in ethanol); D20 +426.5° (c = 1 in 0.005N methanolic H2SO4) | | Boiling point | 327.55°C (rough estimate) | | density | 1.0583 (rough estimate) | | refractive index | 410 ° (C=0.2, EtOH) | | storage temp. | 2-8°C | | solubility | Chloroform (Slightly), Ethanol (Sparingly), Methanol (Slightly) | | pka | 4.87±0.33(Predicted) | | form | Off-white powder | | color | White to Pale Yellow | | optical activity | [α]/D 415±10°, c = 0.1 in ethanol | | Merck | 14,11 | | BRN | 2698956 | | Stability: | Light Sensitive | | InChIKey | JLIDBLDQVAYHNE-WEYXYWBQSA-N | | LogP | 1.896 (est) | | CAS DataBase Reference | 21293-29-8(CAS DataBase Reference) | | EPA Substance Registry System | 2,4-Pentadienoic acid, 5-[(1S)-1-hydroxy-2,6,6-trimethyl-4-oxo-2-cyclohexen-1-yl]-3-methyl-, (2Z,4E)- (21293-29-8) |
| Safety Statements | 22-24/25 | | WGK Germany | 3 | | RTECS | RZ2475100 | | F | 8 | | HS Code | 29189900 |
| | (+)-Abscisic acid Usage And Synthesis |
| Chemical Properties | White Powder | | Uses | Valacyclovir intermediate | | Uses | The natural isomer of the abscission-accelerating plant hormone | | Definition | ChEBI: The naturally occurring (1'S)-(+) enantiomer of abscisic acid. It is an important sesquiterpenoid plant hormone which acts as a regulator of plant responses to environmental stresses such as drought and cold. | | Biochem/physiol Actions | Plant hormone and growth regulator that is involved in several physiological mechanisms including seed dormancy, leaf abscission, stomatal movement, and plant stress responses. Through complex interactions with several intracellular signaling systems, it can regulate the expression of hundreds of plant genes. | | storage | -20°C | | Purification Methods | Crystallise the acid from CCl4/pet ether, EtOH/hexane and sublime it at 120o. Also purify it by dissolving ~30g in 30mL of EtOAc, adding 100mL of hexane and allow to crystallise overnight (yield 8.4g), m 156-158o, 161-163o, [] D +426o (c 0.005M H2SO4 in MeOH). [Cornforth et al. Nature (London) 206 715 1965, Soukemp et al. Helv Chim Acta 72 361 1989.] The RS-isomer was purified on a Kieselgel F254 plate with toluene/EtOAc/AcOH (50:50:3) and has m 188-190o [Cornforth et al. Aust J Chem 45 179 1992]. [Beilstein 17/3 V 13.] |
| | (+)-Abscisic acid Preparation Products And Raw materials |
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