CASRN not found or no results found for CASRN: 

Usage:
GET Examples
    https://ice.ntp.niehs.nih.gov/api/v1/search?chemid=138261-41-3
    https://ice.ntp.niehs.nih.gov/api/v1/search?chemid=58-18-4&assay=Malformation

chemid - chemid to search on (required)
assay - assay to search on (optional)

POST example
    https://ice.ntp.niehs.nih.gov/api/v1/search

JSON body:
{"chemids":["10540-29-1","DTXSID1033664", "MEHHPFQKXOUFFV-UHFFFAOYSA-N","OC1CCCCC1"],
"assays":["LTEA_HepaRG_FAS_up","Uterotrophic-Agonist","Rat Acute Oral Toxicity", "hCLAT", "CoMPARA, AR Agonist","Two year cancer bioassay"]}

chemids - list of chemids to search on (required) 
assays - list of assays to search on (optional)

Supported chemid(s) are:
CASRN, DTXSID, InChiKey, SMILES 

 Supported assay(s):
 "Cell Population Proliferation","AcuteTox - GCPR Signaling Pathway (MOA)","DART - Glial Cell Migration","Other In Vivo Skin Sensitization Assays","Molecular Weight","Glycine-gated Chloride Ion Channel Activity","Thyroid Hormone - Transcription Regulator Binding","Thyroid Hormone Receptor Binding","AR Binding","Androgen - Aromatase Activity","Systemic","ER Pathway Model, Antagonist","SEEM3, Exposure Predictions","Regulation of Inflammatory Response","CardioTox - Change in Action Potential (MOA)","Microtubule-based Process","Regulation of Cell Cycle","AcuteTox - Regulation of Defense Response","OPERA, Number of Hydrogen Bond Donors","Thyrotropin-Releasing Hormone Receptor Activity","Retinoid X Receptor Binding","Progesterone Receptor Signaling Pathway","Energy Homeostasis","DART - Extracellular Matrix Organization (MOA)","Monoamine Oxidase Activity","DART - Aromatase Activity","CoMPARA, AR Binding","Estrogen - Regulation of Hormone Levels","Regulation of Hormone Levels","AcuteTox - Neuronal Cell Viability Process (MOA)","DART - Cell Differentiation","Gamma-Aminobutyric Acid Receptor Activity","DART - Cellular Process (MOA)","Murine Local Lymph Node Assay (LLNA)","Cholesterol Transport","CERAPP, ER Antagonist","AcuteTox - Cholesterol Transport","Guinea Pig Maximization/Buehler","AcuteTox - Cellular Response to Stress (MOA)","OPERA, Number of Hydrogen Bond Acceptors","DART - Transcription Regulator Activity","DART - Signaling Receptor Binding (MOA)","Farnesoid X Receptor Activity","Glucocorticoid Receptor Binding","AcuteTox - Signal Transduction","Other Steroid Hormone - Regulation of Hormone Levels","OPERA, Human Hepatic Intrinsic Clearance","OPERA, OH rate constant for the atmospheric, gas-phase reaction between photochemically produced hydroxyl radicals and organic chemicals","Progesterone Receptor Binding","Estrogen - Transcription Regulator Activity (MOA)","SkinEthic Corrosion","AcuteTox - Regulation of Neurotransmitter Levels (MOA)","AcuteTox - Voltage-gated Channel Activity (MOA)","Androgen Receptor Binding","Aryl Hydrocarbon Receptor Activity","DART - Programmed Cell Death (MOA)","DART - Transcription Factor Activation (MOA)","Neuronal Cell Viability Process","Regulation of Neurotransmitter Levels","AcuteTox - Cell Viability Process","DART - Cell Development","Thyroid Hormone - Transcription Regulator Binding (MOA)","Androgen - Transcription Regulator Activity (MOA)","Voltage-gated Potassium Channel Activity","OPERA, Number of Oxygen Atoms","AcuteTox - Regulation of Nervous System Process (MOA)","DART - Transcription Regulator Binding (MOA)","DART - p53 Signaling Pathway","Signaling Receptor Activity","AR Pathway Model, Agonist","DART - Cellular Response to Stress (MOA)","Gamma-Aminobutyric Acid Receptor Binding","Corrositex","Regulation of Lymphocyte Activation","In Vivo Genotoxicity","DART - Glial Cell Migration (MOA)","AcuteTox - Energy Homeostasis","DART - Voltage-gated Channel Activity","OPERA, Molar Refractivity","CardioTox - Change in Action Potential","httk, Rat Plasma Fraction Unbound","DART - p53 Signaling Pathway (MOA)","Androgen - Transcription Regulator Activity","Not Annotated","Rabbit Draize Eye Irritation/Corrosion Test","CoMPARA, AR Agonist","OPERA, Number Failures of the Lipinski's Rule Of 5","AcuteTox - Regulation of Blood Coagulation (MOA)","CoMPARA, AR Antagonist","Cholinesterase Activity","Cancer - KCC10: Cell Proliferation/Death/Energetics","Cytokine Production Involved in Inflammatory Response","DART - Transcription Factor Activation","DART - Regulation of Hormone Levels (MOA)","Cellular Response to Stress","EpiSkin Corrosion","Vitrolife-Skin Irritation","DART - Developmental Process (MOA)","Developmental Process","DART - Cholesterol Transport","AcuteTox - Transmembrane Signaling Receptor Activity (MOA)","mMUSST","DNA-binding Transcription Factor Binding","AcuteTox - p53 Signaling Pathway (MOA)","AcuteTox - Neural Precursor Cell Proliferation (MOA)","AcuteTox - Cellular Response to Stress","Four-hour Human Patch Test","AcuteTox - Neuron Migration (MOA)","LuSens","AcuteTox - Signaling Receptor Activity","CardioTox - Change in Inotropy","Report on Carcinogens","Cell Development","DART - Neural Precursor Cell Proliferation (MOA)","DART - Neuron Differentiation","Cell Viability Process","DART - Neuron Apoptotic Process","Cancer - KCC4: Epigenetic Alterations","AcuteTox - Energy Homeostasis (MOA)","Developmental","DART - Neuron Apoptotic Process (MOA)","OPERA, Number of Rings","In Vitro Skin Corrosion Assays","Cancer - KCC6: Chronic Inflammation (MOA)","Regulation of Cytokine Production","AcuteTox - Glial Cell Migration","CardioTox - Change in Vasoactivity","DART - Cellular Response to Oxidative Stress (MOA)","Other Steroid Hormone - Transcription Regulator Activity","AcuteTox - Immune Receptor Activity","OPP Carcinogenicity","OPERA, Topological Polar Surface Area","AcuteTox - Neuronal Cell Viability Process","AcuteTox - Cholesterol Transport (MOA)","Rat Acute Dermal Toxicity","OPERA, Number of Atoms","DART - Cell Differentiation (MOA)","CardioTox - Valvular Injury/Proliferation (MOA)","Rat Acute Inhalation Toxicity","Androgen - Transcription Regulator Binding (MOA)","LabCyte EPI-MODEL24 Irritation","Thyroid Hormone - Transcription Regulator Activity","Aromatase Activity","AcuteTox - GCPR Signaling Pathway","Cancer - KCC3: Alteration of DNA Repair/Genomic Stability","AcuteTox - Voltage-gated Channel Activity","CardioTox - Cardiomyocyte/Myocardial Injury (MOA)","Cytochrome P450 Activity","Adrenergic Receptor Signaling Pathway","Rat Acute Oral Toxicity","httk, Rat Hepatic Intrinsic Clearance","AcuteTox - Epigenetic Regulation of Gene Expression (MOA)","DART - Programmed Cell Death","Opioid Receptor Signaling Pathway","Glutamate Receptor Activity","Hershberger Assay","Cancer - KCC3: Alteration of DNA Repair/Genomic Stability (MOA)","OPERA, Boiling Point","AcuteTox - Epigenetic Regulation of Gene Expression","Peroxisome Proliferator Activated Receptor Signaling Pathway","AcuteTox - p53 Signaling Pathway","Neuropeptide Signaling Pathway","DART - Developmental Process","DART - Regulation of Hormone Levels","CardioTox - Valvular Injury/Proliferation","Tyrosine Iodinase Activity","OPERA, Number of Rotatable Bonds","DART - Regulation of Vasculature Development (MOA)","DART - Regulation of Vasculature Development","DART - Cell Development (MOA)","Neuron Projection Development","Acetylcholine Receptor Signaling Pathway","AcuteTox - Cholinesterase Activity","Serotonin Receptor Activity","Voltage-gated Sodium Channel Activity","DART - Neural Precursor Cell Proliferation","OPERA, Fish Bioconcentration Factor","AcuteTox - Cellular Response to Oxidative Stress (MOA)","OPERA, Whole Body Primary Biotransformation Rate (Half-Life) Constant for Organic Chemicals in Fish","Cell Differentiation","Constitutive Androstane Receptor Binding","hCLAT","Voltage-gated Calcium Channel Activity","DART - Transcription Regulator Binding","AcuteTox - Regulation of Blood Coagulation","OPERA, Vapor Pressure","AcuteTox - Immune Receptor Activity (MOA)","AcuteTox - Cholinesterase Activity (MOA)","DART - GCPR Signaling Pathway","DART - Monoamine Oxidase Activity","Androgen - Transcription Regulator Binding","Estrogen - Aromatase Activity (MOA)","Cancer - KCC10: Cell Proliferation/Death/Energetics (MOA)","DART - Neuron Differentiation (MOA)","NTP Call Dose","OPERA, Fraction of Sp3 Carbons to Sp2 Carbons","Neuron Apoptotic Process","AcuteTox - Glial Cell Migration (MOA)","DNA Damage Response","ER Pathway Model, Agonist","p53 Signaling Pathway","ER Transactivation","Regulation of Blood Coagulation","AcuteTox - Regulation of Neurotransmitter Levels","Cellular Response to Oxidative Stress","Histone Modification","NTP Carcinogenicity","Regulation of Tissue Remodeling","OPERA, Melting Point","AcuteTox - Transmembrane Signaling Receptor Activity","Cytokine-mediated Signaling Pathway","CERAPP, ER Agonist","In Vitro Genotoxicity","Thyroxine Deiodinase Activity","AcuteTox - Signaling Receptor Activity (MOA)","Retinoic Acid Receptor Binding","Cancer - KCC8: Receptor Mediated Effects","Vitrigel-Eye Irritancy Test","AcuteTox - Neuron Differentiation (MOA)","AcuteTox - Signal Transduction (MOA)","Constitutive Androstane Receptor Activation","Retinoic Acid Receptor Activity","Glucocorticoid Receptor Activity","Glial Cell Migration","Cancer - KCC4: Epigenetic Alterations (MOA)","Cancer - KCC6: Chronic Inflammation","OPERA, Number of Rings Containing Heteroatoms","Regulation of Angiogenesis","AcuteTox - Neural Precursor Cell Proliferation","Human Predictive Patch Test","Synapse Assembly","Adenosine Receptor Signaling Pathway","DART - Signaling Receptor Binding","httk, Human Plasma Fraction Unbound","DART - Signaling Receptor Activity (MOA)","DART","AcuteTox - Neural Crest Cell Migration","DART - Cellular Response to Oxidative Stress","Folic Acid Metabolic Process","DART - Extracellular Matrix Organization","Other Steroid Hormone - Transcription Regulator Binding","Neuronal Signal Transduction","Thyroid Hormone Generation","OPERA, Number of Aromatic Atoms","DART - Cellular Process","DART - Cytochrome P450 Activity (MOA)","DART - Neuron Migration (MOA)","OPERA, Biodegradation Half-Life for Compounds Containing Only Carbon and Hydrogen","DART - Neural Crest Cell Migration","Neural Precursor Cell Proliferation","EpiSkin Irritation","CardioTox - Cardiomyocyte/Myocardial Injury","DART - Neuron Migration","DART - Regulation of Nervous System Process","Other Steroid Hormone - Transcription Regulator Activity (MOA)","AR Transactivation","Cancer","KeratinoSens","Estrogen - Aromatase Activity","OPERA, Number of Heavy Atoms","AcuteTox - Cell Viability Process (MOA)","Reproductive","AcuteTox - Regulation of Defense Response (MOA)","Cancer - KCC2: Genotoxic Effects","Estrogen - Transcription Regulator Binding (MOA)","AcuteTox - Cellular Response to Oxidative Stress","Chemical Properties","Cancer - KCC8: Receptor Mediated Effects (MOA)","DART - Neural Crest Cell Migration (MOA)","DART - Neuronal Cell Viability Process (MOA)","OPERA, Ready Biodegradability of Organic Chemicals","DART - GCPR Signaling Pathway (MOA)","AcuteTox - Signaling Receptor Binding","Neuron Differentiation","DART - Monoamine Oxidase Activity (MOA)","Histone Deacetylation","DPRA","EpiDerm Corrosion","In Vivo Eye Irritation/Corrosion Assays","U-SENS","Extracellular Matrix Organization","Thyroid Hormone Receptor Activity","Dopamine Receptor Signaling Pathway","Other Steroid Hormone - Regulation of Hormone Levels (MOA)","CardioTox - Change in Vasoactivity (MOA)","Estrogen - Transcription Regulator Activity","Programmed Cell Death","Rabbit Draize Skin Irritation/Corrosion Test","OPERA, Octanol-Water Partition Coefficient","OPERA, Number of Carbon Atoms","DART - Transcription Regulator Activity (MOA)","Estrogen Receptor Binding","AcuteTox - Regulation of Nervous System Process","DART - Regulation of Neurotransmitter Levels","httk, Human Hepatic Intrinsic Clearance","DART - Regulation of Nervous System Process (MOA)","Retinoid X Receptor Activation","OPERA, Henry's Law Constant","Glutamate Receptor Binding","Serotonin Receptor Binding","In Vivo Skin Sensitization Assays","Neuron Migration","OPERA, Human Plasma Fraction Unbound","Vitamin D Receptor Activity","OPERA, Caco-2 Permeability","Regulation of DNA-binding Transcription Factor Activity","NTP Carcinogenicity (WOE)","TER Corrosion","OPERA, Water Solubility","AcuteTox - Signaling Receptor Binding (MOA)","Mineralocorticoid Receptor Binding","Peroxisome Proliferator Activated Receptor Binding","DART - Cytochrome P450 Activity","OPERA, Negative Log of Acid Dissociation Constant","DART - Voltage-gated Channel Activity (MOA)","Androgen Receptor Activity","Thyroid Hormone - Transcription Regulator Activity (MOA)","Inward Rectifier Potassium Channel Activity","CardioTox - Endothelial Injury/Coagulation (MOA)","AcuteTox - Neuron Migration","OPERA, Number of Nitrogen Atoms","Nicotinic Acid Receptor Activity","OPERA, Octanol-Water Distribution Coefficient","DART - Aromatase Activity (MOA)","CATMoS, Rat Acute Oral Toxicity","Estrogen - Transcription Regulator Binding","AcuteTox - Neurotransmitter Transport","AR Pathway Model, Antagonist","CERAPP, ER Binding","DART - Cellular Response to Stress","LabCyte Corrosion","OPERA, Combined Dipolarity/Polarizability","DART - Signaling Receptor Activity","Androgen - Regulation of Hormone Levels","Thyroid Hormone - Thyroid Hormone Metabolic Process","Cancer - KCC2: Genotoxic Effects (MOA)","Androgen - Aromatase Activity (MOA)","Steroid Hormone Receptor Activity","Regulation of Transmission of Nerve Impulse","AcuteTox - Neurotransmitter Transport (MOA)","DART - Regulation of Neurotransmitter Levels (MOA)","Cancer - KCC5: Oxidative Stress (MOA)","Vitrolife-Skin Corrosion","AcuteTox - Neuron Differentiation","AcuteTox - Neural Crest Cell Migration (MOA)","Androgen - Regulation of Hormone Levels (MOA)","Uterotrophic Assay","OPERA, Soil Adsorption Coefficient of Organic Compounds","Regulation of Cell Growth","Estrogen - Regulation of Hormone Levels (MOA)","IARC Carcinogenicity","Thyroid Hormone - Thyroid Hormone Metabolic Process (MOA)","Neural Crest Cell Migration","OPERA, Octanol-Air Partition Coefficient","SENS-IS","DART - Neuronal Cell Viability Process","Cancer - KCC5: Oxidative Stress","Estrogen Receptor Activity","EpiDerm Irritation","CardioTox - Endothelial Injury/Coagulation","CardioTox - Change in Inotropy (MOA)","Neurotransmitter Transport","Other Steroid Hormone - Transcription Regulator Binding (MOA)","DART - Cholesterol Transport (MOA)","Regulation of Immune Response"