Thidiazuron (T3D4541)
Record Information | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Version | 2.0 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Creation Date | 2014-08-29 06:51:46 UTC | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Update Date | 2014-12-24 20:26:52 UTC | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Accession Number | T3D4541 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Identification | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Common Name | Thidiazuron | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Class | Small Molecule | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Description | Thidiazuron is an herbicide and defoliant plant growth regulator used particularly in cotton crops. It is absorbed by leaves. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Compound Type |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Chemical Structure | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Synonyms |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Chemical Formula | C9H8N4OS | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Average Molecular Mass | 220.251 g/mol | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Monoisotopic Mass | 220.042 g/mol | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
CAS Registry Number | 51707-55-2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
IUPAC Name | N'-phenyl-N-(1,2,3-thiadiazol-5-yl)carbamimidic acid | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Traditional Name | N'-phenyl-N-(1,2,3-thiadiazol-5-yl)carbamimidic acid | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
SMILES | OC(NC1=CN=NS1)=NC1=CC=CC=C1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
InChI Identifier | InChI=1S/C9H8N4OS/c14-9(12-8-6-10-13-15-8)11-7-4-2-1-3-5-7/h1-6H,(H2,11,12,14) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
InChI Key | InChIKey=HFCYZXMHUIHAQI-UHFFFAOYSA-N | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Chemical Taxonomy | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Description | belongs to the class of organic compounds known as n-phenylureas. N-phenylureas are compounds containing a N-phenylurea moiety, which is structurally characterized by a phenyl group linked to one nitrogen atom of a urea group. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Kingdom | Organic compounds | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Super Class | Benzenoids | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Class | Benzene and substituted derivatives | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Sub Class | N-phenylureas | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Direct Parent | N-phenylureas | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Alternative Parents | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Substituents |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Molecular Framework | Aromatic heteromonocyclic compounds | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
External Descriptors |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Biological Properties | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Status | Detected and Not Quantified | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Origin | Exogenous | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Cellular Locations |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Biofluid Locations | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Tissue Locations | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Pathways |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Applications | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Biological Roles | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Chemical Roles | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Physical Properties | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
State | Solid | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Appearance | White powder. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Experimental Properties |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Predicted Properties |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Spectra | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Spectra |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Toxicity Profile | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Route of Exposure | Dermal; inhalation. (1) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mechanism of Toxicity | The US EPA has found no information indicating thidiazuron shares a common mechanism of toxicity with other substances. (1) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Metabolism | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Toxicity Values | LD50 > 2 g/kg (1). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Lethal Dose | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Carcinogenicity (IARC Classification) | No indication of carcinogenicity to humans (not listed by IARC). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Uses/Sources | Thidiazuron has been registered for use as a pre-harvest cotton defoliant or growth regulator. It removes green leaves and immature fruiting structures, which contribute to cotton staining. (1) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Minimum Risk Level | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Health Effects | Relatively few incidents of illness have been reported due to thidiazuron. Since 1992, OPP IDS has only reported 5 incidents as a result of thidiazuron exposure, which all show similar symptoms such as skin rash, nausea, and weakness. However, no medical treatment was required. (1) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Symptoms | Minor skin rash, nausea, and weakness (1). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Treatment | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Normal Concentrations | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Not Available | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Abnormal Concentrations | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Not Available | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
External Links | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
DrugBank ID | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
HMDB ID | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
PubChem Compound ID | 40087 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ChEMBL ID | CHEMBL505661 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ChemSpider ID | 36635 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
KEGG ID | C18812 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
UniProt ID | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
OMIM ID | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ChEBI ID | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
BioCyc ID | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
CTD ID | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Stitch ID | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
PDB ID | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ACToR ID | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Wikipedia Link | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
References | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Synthesis Reference | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
MSDS | T3D4541.pdf | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General References |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Gene Regulation | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Up-Regulated Genes | Not Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Down-Regulated Genes | Not Available |
Targets
- General Function:
- Protease binding
- Specific Function:
- Metalloproteinase inhibitor that functions by forming one to one complexes with target metalloproteinases, such as collagenases, and irreversibly inactivates them by binding to their catalytic zinc cofactor. Acts on MMP1, MMP2, MMP3, MMP7, MMP8, MMP9, MMP10, MMP11, MMP12, MMP13 and MMP16. Does not act on MMP14. Also functions as a growth factor that regulates cell differentiation, migration and cell death and activates cellular signaling cascades via CD63 and ITGB1. Plays a role in integrin signaling. Mediates erythropoiesis in vitro; but, unlike IL3, it is species-specific, stimulating the growth and differentiation of only human and murine erythroid progenitors.
- Gene Name:
- TIMP1
- Uniprot ID:
- P01033
- Molecular Weight:
- 23170.64 Da
Binding/Activity Constants
Type | Value | Assay Type | Assay Source |
---|---|---|---|
AC50 | 1.48 uM | BSK_hDFCGF_TIMP1_up | BioSeek |
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Serine-type endopeptidase activity
- Specific Function:
- Specifically cleaves the zymogen plasminogen to form the active enzyme plasmin.
- Gene Name:
- PLAU
- Uniprot ID:
- P00749
- Molecular Weight:
- 48507.09 Da
Binding/Activity Constants
Type | Value | Assay Type | Assay Source |
---|---|---|---|
AC50 | 1.48 uM | BSK_BE3C_uPA_down | BioSeek |
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen
- Specific Function:
- Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. Most active in catalyzing 2-hydroxylation. Caffeine is metabolized primarily by cytochrome CYP1A2 in the liver through an initial N3-demethylation. Also acts in the metabolism of aflatoxin B1 and acetaminophen. Participates in the bioactivation of carcinogenic aromatic and heterocyclic amines. Catalizes the N-hydroxylation of heterocyclic amines and the O-deethylation of phenacetin.
- Gene Name:
- CYP1A2
- Uniprot ID:
- P05177
- Molecular Weight:
- 58293.76 Da
Binding/Activity Constants
Type | Value | Assay Type | Assay Source |
---|---|---|---|
AC50 | 2.53 uM | CLZD_CYP1A2_6 | CellzDirect |
AC50 | 5.40 uM | NVS_ADME_hCYP1A2 | Novascreen |
AC50 | 2.69 uM | NVS_ADME_hCYP1A2 | Novascreen |
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Vitamin d 24-hydroxylase activity
- Specific Function:
- Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics.
- Gene Name:
- CYP1A1
- Uniprot ID:
- P04798
- Molecular Weight:
- 58164.815 Da
Binding/Activity Constants
Type | Value | Assay Type | Assay Source |
---|---|---|---|
AC50 | 2.59 uM | CLZD_CYP1A1_6 | CellzDirect |
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Sodium-independent organic anion transmembrane transporter activity
- Specific Function:
- Mediates the Na(+)-independent uptake of organic anions such as pravastatin, taurocholate, methotrexate, dehydroepiandrosterone sulfate, 17-beta-glucuronosyl estradiol, estrone sulfate, prostaglandin E2, thromboxane B2, leukotriene C3, leukotriene E4, thyroxine and triiodothyronine. Involved in the clearance of bile acids and organic anions from the liver.
- Gene Name:
- SLCO1B1
- Uniprot ID:
- Q9Y6L6
- Molecular Weight:
- 76447.99 Da
Binding/Activity Constants
Type | Value | Assay Type | Assay Source |
---|---|---|---|
AC50 | 2.88 uM | CLZD_SLCO1B1_48 | CellzDirect |
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Serotonin receptor activity
- Specific Function:
- This is one of the several different receptors for 5-hydroxytryptamine (serotonin), a biogenic hormone that functions as a neurotransmitter, a hormone, and a mitogen. The activity of this receptor is mediated by G proteins.
- Gene Name:
- HTR5A
- Uniprot ID:
- P47898
- Molecular Weight:
- 40254.69 Da
Binding/Activity Constants
Type | Value | Assay Type | Assay Source |
---|---|---|---|
AC50 | 6.40 uM | NVS_GPCR_h5HT5A | Novascreen |
AC50 | 3.93 uM | NVS_GPCR_h5HT5A | Novascreen |
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Steroid hydroxylase activity
- Specific Function:
- Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. Acts as a 1,4-cineole 2-exo-monooxygenase.
- Gene Name:
- CYP2B6
- Uniprot ID:
- P20813
- Molecular Weight:
- 56277.81 Da
Binding/Activity Constants
Type | Value | Assay Type | Assay Source |
---|---|---|---|
AC50 | 4.55 uM | CLZD_CYP2B6_48 | CellzDirect |
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Steroid binding
- Specific Function:
- UDPGT is of major importance in the conjugation and subsequent elimination of potentially toxic xenobiotics and endogenous compounds. This isoform glucuronidates bilirubin IX-alpha to form both the IX-alpha-C8 and IX-alpha-C12 monoconjugates and diconjugate. Is also able to catalyze the glucuronidation of 17beta-estradiol, 17alpha-ethinylestradiol, 1-hydroxypyrene, 4-methylumbelliferone, 1-naphthol, paranitrophenol, scopoletin, and umbelliferone. Isoform 2 lacks transferase activity but acts as a negative regulator of isoform 1.
- Gene Name:
- UGT1A1
- Uniprot ID:
- P22309
- Molecular Weight:
- 59590.91 Da
Binding/Activity Constants
Type | Value | Assay Type | Assay Source |
---|---|---|---|
AC50 | 4.86 uM | CLZD_UGT1A1_48 | CellzDirect |
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Xenobiotic-transporting atpase activity
- Specific Function:
- High-capacity urate exporter functioning in both renal and extrarenal urate excretion. Plays a role in porphyrin homeostasis as it is able to mediates the export of protoporhyrin IX (PPIX) both from mitochondria to cytosol and from cytosol to extracellular space, and cellular export of hemin, and heme. Xenobiotic transporter that may play an important role in the exclusion of xenobiotics from the brain. Appears to play a major role in the multidrug resistance phenotype of several cancer cell lines. Implicated in the efflux of numerous drugs and xenobiotics: mitoxantrone, the photosensitizer pheophorbide, camptothecin, methotrexate, azidothymidine (AZT), and the anthracyclines daunorubicin and doxorubicin.
- Gene Name:
- ABCG2
- Uniprot ID:
- Q9UNQ0
- Molecular Weight:
- 72313.47 Da
Binding/Activity Constants
Type | Value | Assay Type | Assay Source |
---|---|---|---|
AC50 | 5.37 uM | CLZD_ABCG2_48 | CellzDirect |
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Vitamin d3 25-hydroxylase activity
- Specific Function:
- Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It performs a variety of oxidation reactions (e.g. caffeine 8-oxidation, omeprazole sulphoxidation, midazolam 1'-hydroxylation and midazolam 4-hydroxylation) of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. Acts as a 1,8-cineole 2-exo-monooxygenase. The enzyme also hydroxylates etoposide (PubMed:11159812). Catalyzes 4-beta-hydroxylation of cholesterol. May catalyze 25-hydroxylation of cholesterol in vitro (PubMed:21576599).
- Gene Name:
- CYP3A4
- Uniprot ID:
- P08684
- Molecular Weight:
- 57342.67 Da
Binding/Activity Constants
Type | Value | Assay Type | Assay Source |
---|---|---|---|
AC50 | 5.90 uM | CLZD_CYP3A4_48 | CellzDirect |
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Transcription regulatory region dna binding
- Specific Function:
- Ligand-activated transcriptional activator. Binds to the XRE promoter region of genes it activates. Activates the expression of multiple phase I and II xenobiotic chemical metabolizing enzyme genes (such as the CYP1A1 gene). Mediates biochemical and toxic effects of halogenated aromatic hydrocarbons. Involved in cell-cycle regulation. Likely to play an important role in the development and maturation of many tissues. Regulates the circadian clock by inhibiting the basal and circadian expression of the core circadian component PER1. Inhibits PER1 by repressing the CLOCK-ARNTL/BMAL1 heterodimer mediated transcriptional activation of PER1.
- Gene Name:
- AHR
- Uniprot ID:
- P35869
- Molecular Weight:
- 96146.705 Da
Binding/Activity Constants
Type | Value | Assay Type | Assay Source |
---|---|---|---|
AC50 | 7.69 uM | Tox21_AhR | Tox21/NCGC |
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]