abscisic acid 0.1%SP 10% AS 5% SL 95% TC agrochemicals plant growth regulator manufacturer bulk price

abscisic acid 0.1%SP 10% AS 5% SL 95% TC agrochemicals plant growth regulator manufacturer bulk price

An isoprenoid plant hormone that acts as a growth regulator affecting leaf and fruit abscission and increases permeability of plant cells to water. Under osmotic stress conditions it alters the osmotic potential of stomatal guard cells, causing them to shrink and stomata to close. Also acts as a proton pump inhibitor. The trans form is shown to potentiate NMDA-gated currents in hippocampal neurons (EC50 = 440 µM).

Please note that the molecular weight for this compound is batch-specific due to variable water content.

(+)-Abscisic acid 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)

FDA UNII 72S9A8J5GW

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)

UNSPSC Code 12352106

NACRES NA.77

(+)-Abscisic acid Chemical Properties,Uses,Production

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.] Manufacturer Agrowonderful cellphone 0086 17349771657

Other name:

ABA;ABK;S-ABA;4-Bromo-5-chloroquinoline;DORMIN;(+)-ABA;ABA, ABK;ABSCISIN;S-(+)-ABA;abscisinii.