OPERA Model Calculation Details: Vapor Pressure

Structural image of Octadecanamide, N-[2-[(2-aminoethyl)amino]ethyl]-
Chemical Identifiers
Preferred name: Octadecanamide, N-[2-[(2-aminoethyl)amino]ethyl]-
DTXSID: DTXSID9063087
DTXCID: DTXCID3039084
CASRN: 3574-73-0
Molecular weight: 369.638
Model Results
Model name: OPERA_VP
Model source: OPERA2.8
Property name: Vapor Pressure
Property description: The pressure exerted by a vapor in thermodynamic equilibrium with the liquid phase in a closed system at a given temperature
Experimental value: Experimental value from OPERA2.8
 N/A
Predicted value: Predicted value from the model
4.37E-10 mmHg
Confidence level:  Confidence level is calculated from the accuracy of the predictions of the five nearest neighbors weighted by their distance to the query chemical
0.355
Combined applicability domain:  Combined applicability domain from multiple AD measures
Outside training set (
Global AD  Global applicability domain via the leverage approach
= 0) and poor local representation (
Local AD index Local applicability domain index is relative to the similarity of the query chemical to its five nearest neighbors from the training set
= 0.219 < 0.4)
Model Performance
Vapor Pressure Model Results Histogram of Vapor Pressure Data
Weighted kNN model statistics
Training (75%) 5-fold CV (75%) Test (25%)
R2 RMSE Q2 RMSE R2 RMSE
0.91 1.08 0.91 1.08 0.92 1.0

Model summary in QSAR Model Reporting Format (QMRF)
Nearest Neighbors from Model Knowledge Base
Neighbor: 1
Measured:  1.51E-07 mmHg
Predicted: Five fold cross validation prediction for the neighbor
 1.74E-04  mmHg

Structural image of Dodecylguanidine acetate
Dodecylguanidine acetate

 Neighbor: 2
Measured:  6.03E-12 mmHg
Predicted: Five fold cross validation prediction for the neighbor
 1.29E-09  mmHg

Structural image of Teflubenzuron
Teflubenzuron

 Neighbor: 3
Measured:  2.82E-11 mmHg
Predicted: Five fold cross validation prediction for the neighbor
 3.80E-10  mmHg

Structural image of Fluroxypyr
Fluroxypyr

 Neighbor: 4
Measured:  7.24E-11 mmHg
Predicted: Five fold cross validation prediction for the neighbor
 1.86E-09  mmHg

Structural image of Picloram
Picloram

 Neighbor: 5
Measured:  3.98E-09 mmHg
Predicted: Five fold cross validation prediction for the neighbor
 1.51E-06  mmHg

Structural image of Siduron
Siduron