6-benzylaminopurine

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

6-benzylaminopurine

中文通用名

6-苄氨基嘌呤

IUPAC

6-benzyladenine

CAS

N-phenylmethyl-1H-purin-6-amine

CAS No.

1214-39-7

Molecular Formula

C₁₂H₁₁N₅

General Product Information

Category

Plant growth regulators > Cytokinins

Activity

Plant growth regulator

CropUse

Stimulates the following effects: cell division; lateral bud emergence (apples, pears, oranges); basal shoot formation (roses, orchids); flowering (cyclamen, cacti); fruit set (grapes, oranges, melons); causes abscission of young fruitlets, leading to increased fruit size, stimulates flower bud formation and regular bearing in fruit trees. Inhibits senescence of rice seedlings. Enhances lateral bud break and lateral shoot growth, leading to fuller white pine trees. Also causes uniform bolting and increased seed production in spinach. Applied by foliar application, soaking, or painting. Its limited ability to translocate is utilised to restrict effects to the target part of the plant, by local application. Applied at 30 g/a for apple trees.

Physical & Safety Data

Physical Properties

Molecular weight:225.3g/mol. Physical form:Colourless, odourless, fine needles; ( tech. is an off-white powder). Composition:Tech. is >99%. Melting point:234-235℃; Vapour pressure:2.373×10-6 mPa (20℃); Henry constant:8.91×10-9 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 2.13 (unstated pH); Solubility:In water 60 mg/l (20℃). Insoluble in most common organic solvents; soluble in dimethylformamide, dimethyl sulfoxide. Stability:Stable in acidic, alkaline and neutral aqueous solution. Stable to light and heat (8 h, 120℃).

Toxicology

Oral:Acute oral LD₅₀ for male rats 2125, female rats 2130, mice 1300 mg/kg. Percutaneous:Acute percutaneous LD₅₀ for rats >5000 mg/kg. Not a skin or eye irritant (rabbits); not a skin sensitiser. ADI:0.05 mg/kg.

Environmental Profile

Ecotoxicology:
Algae: EC₅₀ (96 h) 363.1 mg/l ('Paturyl' 10 SL formulation).Bees: LD₅₀ (oral) 400 μg/bee, (contact) 57.8 l/ (both 'Paturyl' 10 SL formulation).Birds:Practically non-toxic.Daphnia: LC₅₀ (24 h) for D. carinata >40 mg/l.Fish: LC₅₀ (48 h) for carp >40 mg/l.
Environmental fate:
Animals:Almost all of administered ¹⁴C was excreted in urine and faeces. Three metabolites were identified.Soil:16 Days after application to soil at 22℃, 6-benzylaminopurine had degraded to 5.3% (sandy loam) and 7.85% (clay loam soil) of applied dose. Other studies indicate DT₅₀ 7-9 w.Plant:More than 9 metabolites were identified from metabolism studies in soya beans, grapes, maize and cocklebur. Urea is an end product.