Brassinolide-ethyl |
Last updated: 30/08/2023
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(Also known as: ethyl-brassinolide; 28-homobrassinolide; homobrassinolide) |
The following alerts are based on the data in the tables below. An absence of an alert does not imply the substance has no implications for human health, biodiversity or the environment but just that we do not have the data to form a judgement.
Environmental fate |
Ecotoxicity |
Human health |
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A biologically active steroidal lactone first isolated from rape pollen that stimulates growth of green plant tissues. |
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Growth |
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Fruit including apples; pears, citrus; Rice; Wheat; Corn; Tomatoes: Cucumber; Lettuce |
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Current |
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2010, first registered USA |
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Not approved |
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Not applicable |
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No UK approval for use |
EC Regulation 1107/2009 (repealing 91/414) |
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Not approved |
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Not applicable |
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Not applicable |
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Not applicable |
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No |
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ATAustria |
BEBelgium |
BGBulgaria |
CYCyprus |
CZCzech Republic |
DEGermany |
DKDenmark |
EEEstonia |
ELGreece |
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ESSpain |
FIFinland |
FRFrance |
HRCroatia |
HUHungary |
IEIreland |
ITItaly |
LTLithuania |
LULuxembourg |
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LVLatvia |
MTMalta |
NLNetherlands |
PLPoland |
PTPortugal |
RORomania |
SESweden |
SISlovenia |
SKSlovakia |
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ISIceland |
NONorway |
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Brassinolide itself, is a complex molecule with 13 chiral centres. It is the R-isomers of brassinosteroids that are, in general, more biologically active. |
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C₂₉H₅₀O₆ |
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CCC(C(C)C)C(C(C(C)C1CCC2C1(CCC3C2COC(=O)C4C3(CC(C(C4)O)O)C)C)O)O |
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CC[C@@H](C(C)C)C(C([C@@H](C)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2COC(=O)[C@@H]4[C@@]3(C[C@H]([C@H](C4)O)O)C)C)O)O |
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HJIKODJJEORHMZ-OZXIRSPGSA-N |
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InChI=1S/C29H50O6/c1-7-17(15(2)3)26(33)25(32)16(4)19-8-9-20-18-14-35-27(34)22-12-23(30)24(31)13-29(22,6)21(18)10-11-28(19,20)5/h15-26,30-33H,7-14H2,1-6H3/t16-,17-,18-,19+,20-,21-,22+,23-,24+,25+,26+,28+,29+/m0/s1 |
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Yes |
Cambridge Crystallographic Data Centre diagrams |
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Common Name |
Relationship |
Link |
brassinolide monohydrate |
Parent |
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Plant Growth Regulator |
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Plant hormone; Plant activator; Plant derived substance substance |
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Natural |
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Oligodynamic and rapid, affects specific target tissues that are sensitive to the plant hormone indole-3-acetic acid (IAA) |
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A biologically active steroidal lactone first isolated from rape (Brassica nauous L.) pollen |
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Growth promotion |
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Fruit including apples; pears, citrus; Rice; Wheat; Corn; Tomatoes: Cucumber; Lettuce |
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74174-44-0 |
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067700 |
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11038340 |
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494.73 |
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(22R,23R,24S)-2α,3α,22,23-tetrahydroxy-7-oxa-7a,23a-dihomo-5α-ergostan-6-one |
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(1S,2R,4R,5S,7S,11S,12S,15R,16S)-15-[(2S,5S)-5-ethyl-3,4-dihydroxy-6-methylheptan-2-yl]-4,5-dihydroxy-2,16-dimethyl-9-oxatetracyclo[9.7.0.02,7.012,16]octadecan-8-one |
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(1R,3aS,3bS,6aS,8S,9R,10aR,10bS,12aS)-1-[(1S,2R,3R,4S)-4-ethyl-2,3-dihydroxy-1,5-dimethylhexyl]hexadecahydro-8,9-dihydroxy-10a,12a-dimethyl-6H-benz[c]indeno[5,4-e]oxepin-6-one |
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Not applicable |
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Not applicable |
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Not applicable |
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Not applicable |
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Often supplied as a water soluble powder |
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As this parameter is not normally measured directly, a surrogate measure is used: ‘Photochemical oxidative DT₅₀’. Where data is available, this can be found in the Fate Indices section below. |
Soil adsorption and mobility |
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None
Terrestrial ecotoxicology |
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HUMAN HEALTH AND PROTECTION |
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High (class III) |
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Carcinogen |
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Endocrine disruptor |
XNo, known not to cause a problem |
A0 A = Chromosome aberration (EFSA database) 0 = No data ; B0 B = DNA damage/repair (EFSA database) 0 = No data ; C0 C = Gene mutation (EFSA database) 0 = No data ; D0 D = Genome mutation (EFSA database) 0 = No data ; E0 E = Unspecified genotoxicity type (miscellaneous data source) 0 = No data |
No data found |
Reproduction / development effects |
Acetyl cholinesterase inhibitor |
Neurotoxicant |
No data found |
No data found |
No data found |
Respiratory tract irritant |
Skin irritant |
Skin sensitiser |
No data found |
✓Yes, known to cause a problem |
No data found |
Eye irritant |
Phototoxicant |
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✓Yes, known to cause a problem |
No data found |
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May be harmful by inhalation, ingestion or skin absorption. |
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No information available |
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Not listed (Not listed) |
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brassinolide-ethyl |
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Record last updated: |
30/08/2023 |
Contact: |
aeru@herts.ac.uk |
Please cite as: |
Lewis, K.A., Tzilivakis, J., Warner, D. and Green, A. (2016) An international database for pesticide risk assessments and management. Human and Ecological Risk Assessment: An International Journal, 22(4), 1050-1064. DOI: 10.1080/10807039.2015.1133242 |