Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Administrative data

Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with limited documentation / justification

Data source

Reference
Reference Type:
other: prediction
Title:
QSAR prediction of levonorgestrel acetate
Author:
Gedeon Richter Plc.
Year:
2016
Bibliographic source:
QSAR Toolbox

Materials and methods

Test guideline
Qualifier:
no guideline required
Principles of method if other than guideline:
QSAR

Test material

Constituent 1
Chemical structure
Reference substance name:
(17β)-13-Ethyl-17-ethynyl-3-oxogon-4-en-17-yl acetate
EC Number:
604-013-8
Cas Number:
13732-69-9
Molecular formula:
C23H30O3
IUPAC Name:
(17β)-13-Ethyl-17-ethynyl-3-oxogon-4-en-17-yl acetate

Test organisms

Test organisms (species):
Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum)

Results and discussion

Effect concentrations
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
7.26
Basis for effect:
growth rate
Remarks on result:
other: prediction

Applicant's summary and conclusion