Abscisic acid

Bezeichnung:Abscisic acid

CAS-Nr14375-45-2

Englisch Name:Abscisic acid

CBNumberCB8669021

SummenformelC15H20O4

Molgewicht264.32

MOL-Datei14375-45-2.mol

Abscisic acid physikalisch-chemischer Eigenschaften

Schmelzpunkt	186-188 °C (lit.)
Siedepunkt	458.7±45.0 °C(Predicted)
Dichte	1.193±0.06 g/cm3(Predicted)
Flammpunkt	120°C
storage temp.	2-8°C
Löslichkeit	methanol: 50 mg/mL, may be clear to slightly hazy
pka	4.87±0.33(Predicted)
Aggregatzustand	Solid
Farbe	White to off-white
Sensitive	Light Sensitive
Sublimation	120 ºC
Merck	14,11
BRN	4142666
CAS Datenbank	14375-45-2(CAS DataBase Reference)

Sicherheit

S-Sätze:	24/25
WGK Germany	3
F	8-10
HS Code	29189900

Abscisic acid Chemische Eigenschaften,Einsatz,Produktion Methoden

S-Sätze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
white to light yellow crystalline powder
Verwenden
Abscisic acid (ABA) is an isoprenoid plant hormone (phytohormone) synthesized in all parts of plants and involved in many plant developmental processes. ABA is involved in establishing dormancy and regulation of stress responses. ABA inhibits fruit ripening, seed germination, photosynthesis and kinetin biosynthesis.
Verwenden
abscission-accelerant; kinetin neucleotide synthesis inhibitor
Definition
ChEBI: 2-cis-abscisic acid is a member of the class of abscisic acids in which the double bond betweeen positions 2 and 3 has cis- (natural) geometry. It has a role as an abscisic acid receptor agonist. It is a conjugate acid of a 2-cis-abscisate.
Landwirtschaftliche Anwendung
The name abscisic acid (ABA), a weak organic acid, is derived from the ability of a substance to promote abscission. Abscission is the natural detachment of leaves, branches, flowers, etc. from plants. Abscisic acid is a naturally occurring plant growth inhibitor, and is one of five major plant hormones. It carries out a number of important functions in the growth and development of plants. It is a key factor controlling stomatal movements, leaf senescence and bud and seed dormancy. Abscisic acid (ABA) is present in leaves, fruits and seeds, and is distributed throughout the plant body. The synthesis of ABA takes place mainly in chloroplasts. The rate of synthesis of ABA increases when the plant is under stress. Chemically, abscisic acid is a member of the terpenoid family.
Stoffwechselwegen
Plant growth regulators: promotion of maturation of the somatic embryo of white spruce Somatic embryo suspension cultures of white spruce containing (?+)-abscisic acid (ABA) metabolize (+?)- ABA almost completely to yield quantitatively phaseic acid with slight further transformation into dihydrophaseic acid within 7 days. (-)-ABA remains essentially unchanged under the same culture conditions, and when the cells are supplied with racemic (±)-ABA, only the (+?) enantiomer is metabolized.

Abscisic acid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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