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Chemical Structure| 5096-73-1 Chemical Structure| 5096-73-1

Structure of 5096-73-1

Chemical Structure| 5096-73-1

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Product Citations

Product Citations

Gregory R. Armel ; James T. Brosnan ; Nilda R. Burgos ; Peter J. Porpiglia ; Jose J. Vargas ;

Abstract: Numerous similarities exist between the structure–activity relationships of pharmaceutical drugs and pesticides, creating the potential for finding new crop management tools with novel mechanisms of action. Analogues of pyrazinamide and its active metabolite pyrazinoic acid were evaluated on a variety of monocot and dicot species to assess their potential as commercial herbicides. Six analogues, applied postemergence at 3 kg ai/ha, controlled yellow nutsedge (Cyperus esculentus) ≥ the commercial standards bentazon or imazethapyr. The compound 5-fluoropyrazine-2-carboxylic acid provided between 71 and 95% control of barnyardgrass (Echinochloa crus-galli) and yellow nutsedge with only modest injury (8–25%) to soybean (Glycine max). A similar compound containing a bromine atom in the 5-position controlled yellow nutsedge greater than bentazon and affected soybean, sweet corn (Zea mays convar. saccharata var. rugosa), and rice (Oryza sativa) in a similar fashion to bentazon as well. The herbicidal sites of action targeted by these analogues of pyrazinamide and pyrazinoic acid are unknown, but it is hypothesized that they may be disrupting targets in the biosynthesis pathways of nicotinamide adenine dinucleotide (NAD) and/or ethylene.

Keywords: herbicide ; rice ; pyrazinamide ; pharmaceutical ; prodrug ; soybean ; sweet corn

Alternative Products

Product Details of [ 5096-73-1 ]

CAS No. :5096-73-1
Formula : C5H3ClN2O2
M.W : 158.54
SMILES Code : ClC1=CC=C(N=N1)C(=O)O
MDL No. :MFCD00160464
InChI Key :HHGZQZULOHYEOH-UHFFFAOYSA-N
Pubchem ID :6415762

Safety of [ 5096-73-1 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H332-H335
Precautionary Statements:P280-P305+P351+P338-P310

Computational Chemistry of [ 5096-73-1 ] Show Less

Physicochemical Properties

Num. heavy atoms 10
Num. arom. heavy atoms 6
Fraction Csp3 0.0
Num. rotatable bonds 1
Num. H-bond acceptors 4.0
Num. H-bond donors 1.0
Molar Refractivity 34.0
TPSA ?

Topological Polar Surface Area: Calculated from
Ertl P. et al. 2000 J. Med. Chem.

63.08 Ų

Lipophilicity

Log Po/w (iLOGP)?

iLOGP: in-house physics-based method implemented from
Daina A et al. 2014 J. Chem. Inf. Model.

0.88
Log Po/w (XLOGP3)?

XLOGP3: Atomistic and knowledge-based method calculated by
XLOGP program, version 3.2.2, courtesy of CCBG, Shanghai Institute of Organic Chemistry

0.65
Log Po/w (WLOGP)?

WLOGP: Atomistic method implemented from
Wildman SA and Crippen GM. 1999 J. Chem. Inf. Model.

0.83
Log Po/w (MLOGP)?

MLOGP: Topological method implemented from
Moriguchi I. et al. 1992 Chem. Pharm. Bull.
Moriguchi I. et al. 1994 Chem. Pharm. Bull.
Lipinski PA. et al. 2001 Adv. Drug. Deliv. Rev.

0.2
Log Po/w (SILICOS-IT)?

SILICOS-IT: Hybrid fragmental/topological method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

0.97
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

0.71

Water Solubility

Log S (ESOL):?

ESOL: Topological method implemented from
Delaney JS. 2004 J. Chem. Inf. Model.

-1.61
Solubility 3.89 mg/ml ; 0.0245 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Very soluble
Log S (Ali)?

Ali: Topological method implemented from
Ali J. et al. 2012 J. Chem. Inf. Model.

-1.55
Solubility 4.46 mg/ml ; 0.0282 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Very soluble
Log S (SILICOS-IT)?

SILICOS-IT: Fragmental method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

-1.63
Solubility 3.72 mg/ml ; 0.0234 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble

Pharmacokinetics

GI absorption?

Gatrointestinal absorption: according to the white of the BOILED-Egg

High
BBB permeant?

BBB permeation: according to the yolk of the BOILED-Egg

No
P-gp substrate?

P-glycoprotein substrate: SVM model built on 1033 molecules (training set)
and tested on 415 molecules (test set)
10-fold CV: ACC=0.72 / AUC=0.77
External: ACC=0.88 / AUC=0.94

No
CYP1A2 inhibitor?

Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.83 / AUC=0.90
External: ACC=0.84 / AUC=0.91

No
CYP2C19 inhibitor?

Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.80 / AUC=0.86
External: ACC=0.80 / AUC=0.87

No
CYP2C9 inhibitor?

Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set)
and tested on 2075 molecules (test set)
10-fold CV: ACC=0.78 / AUC=0.85
External: ACC=0.71 / AUC=0.81

No
CYP2D6 inhibitor?

Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set)
and tested on 1068 molecules (test set)
10-fold CV: ACC=0.79 / AUC=0.85
External: ACC=0.81 / AUC=0.87

No
CYP3A4 inhibitor?

Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set)
and tested on 2579 molecules (test set)
10-fold CV: ACC=0.77 / AUC=0.85
External: ACC=0.78 / AUC=0.86

No
Log Kp (skin permeation)?

Skin permeation: QSPR model implemented from
Potts RO and Guy RH. 1992 Pharm. Res.

-6.81 cm/s

Druglikeness

Lipinski?

Lipinski (Pfizer) filter: implemented from
Lipinski CA. et al. 2001 Adv. Drug Deliv. Rev.
MW ≤ 500
MLOGP ≤ 4.15
N or O ≤ 10
NH or OH ≤ 5

0.0
Ghose?

Ghose filter: implemented from
Ghose AK. et al. 1999 J. Comb. Chem.
160 ≤ MW ≤ 480
-0.4 ≤ WLOGP ≤ 5.6
40 ≤ MR ≤ 130
20 ≤ atoms ≤ 70

None
Veber?

Veber (GSK) filter: implemented from
Veber DF. et al. 2002 J. Med. Chem.
Rotatable bonds ≤ 10
TPSA ≤ 140

0.0
Egan?

Egan (Pharmacia) filter: implemented from
Egan WJ. et al. 2000 J. Med. Chem.
WLOGP ≤ 5.88
TPSA ≤ 131.6

0.0
Muegge?

Muegge (Bayer) filter: implemented from
Muegge I. et al. 2001 J. Med. Chem.
200 ≤ MW ≤ 600
-2 ≤ XLOGP ≤ 5
TPSA ≤ 150
Num. rings ≤ 7
Num. carbon > 4
Num. heteroatoms > 1
Num. rotatable bonds ≤ 15
H-bond acc. ≤ 10
H-bond don. ≤ 5

1.0
Bioavailability Score?

Abbott Bioavailability Score: Probability of F > 10% in rat
implemented from
Martin YC. 2005 J. Med. Chem.

0.56

Medicinal Chemistry

PAINS?

Pan Assay Interference Structures: implemented from
Baell JB. & Holloway GA. 2010 J. Med. Chem.

0.0 alert
Brenk?

Structural Alert: implemented from
Brenk R. et al. 2008 ChemMedChem

0.0 alert: heavy_metal
Leadlikeness?

Leadlikeness: implemented from
Teague SJ. 1999 Angew. Chem. Int. Ed.
250 ≤ MW ≤ 350
XLOGP ≤ 3.5
Num. rotatable bonds ≤ 7

No; 1 violation:MW<1.0
Synthetic accessibility?

Synthetic accessibility score: from 1 (very easy) to 10 (very difficult)
based on 1024 fragmental contributions (FP2) modulated by size and complexity penaties,
trained on 12'782'590 molecules and tested on 40 external molecules (r2 = 0.94)

1.67

Application In Synthesis of [ 5096-73-1 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 5096-73-1 ]

[ 5096-73-1 ] Synthesis Path-Downstream   1~4

  • 1
  • [ 5096-73-1 ]
  • [ 124-41-4 ]
  • [ 65202-50-8 ]
YieldReaction ConditionsOperation in experiment
72% A solution of 6-chloro-pyridazine-3-carboxylic acid (700 mg, 4.53mmol) in thionyl chloride (15 ml) was refluxed for 3 h. The reaction was cooled to ambient temperature and evaporated to dryness. Sodium methoxide (244 mg, 4.53 mmol) in [MEOH] (20 ml) was added to the residue and the solution was stirred on at room temperature (rt). [H2O] was added and the mixture was extracted three times with DCM. The combined organic phases were dried and concentrated. Flashchromatography [(SI02,] Heptane/EtOAc 1: 1) afforded 560 mg (72percent) of the title compound. [1H] NMR [(CDC13),] 5 (ppm): 4.09 (s, 3 H), 7.69 (d, 1 H), 8. 18 (d, 1 H). [LC-MS] [(M++1)] : 173 and 175 (3: 1).
  • 2
  • [ 67-56-1 ]
  • [ 5096-73-1 ]
  • [ 65202-50-8 ]
YieldReaction ConditionsOperation in experiment
Step 1: To a mixture of compound 7-1 (4.14 g, 26.1 mmol) in DCM (100 mL) was added oxalyl chloride (3.98 g, 31.3 mmol) dropwise. DMF (0.05 mL) was added and the resulting mixture was stirred at room temperature until the compound 7-1 was dissolved. Then MeOH (2 mL) was added dropwise and stirred for another 0.5 hr. After being washed with brine (100 mL), the mixture was dried over anhydrous Na2SC>4 and concentrated to give crude product. The crude product was purified by silica-gel column chromatography (eluting with PE/EA = 4/1) to yield the desired product 7-2 as white solid. LC-MS: m/z = 173.1
  • 4
  • [ 5096-73-1 ]
  • [ 24424-99-5 ]
  • [ 1340506-55-9 ]
YieldReaction ConditionsOperation in experiment
81% With dmap; In tetrahydrofuran; at 50.0℃; for 1.0h; A suspension of (1) (2.0g, 12.7mmol) and 4-(dimethylamino)pyridine (776mg, 6.3mmol) in THF (50ml_) was treated with di-fe/f-butyl dicarbonate (3.6g, 16.5mmol). It was heated up to 50C for 1 h, then stirred at rt overnight. The reaction mixture was concentrated in vacuo, re-dissolved in EtOAc (20ml_), poured into HCI solution (1 M, 20ml_) and extracted with EtOAc (2 x 20ml_). The combined organics were washed with NaHC03 solution (50ml_) and brine (50ml_), dried over MgS04, filtered and concentrated in vacuo. Purification by silica gel column chromatography with hexane/EtOAc (1 :0-3: 1 ) yielded (2) as a white solid (2.2g, 81 %). (0878) LCMS (ES): Found 237.0 [M+Naf. (0879) 1H NMR (300 MHz, Chloroform-cf), d: 8.08 (d, J= 8.7 Hz, 1 H), 7.63 (d, J=8.9 Hz, 1 H), 1.67 (s, 9H).
56% With dmap; In dichloromethane; at 20.0℃; for 12.0h; Dissolve 6-chloropyridazine-3-carboxylic acid (7a) (2g, 12.62mmol) in 20mL DCM, add DMAP (3.08g, 25.23mmol),(Boc)2O (5.51g, 25.23mmol) was added at room temperature, and the reaction was stirred at room temperature for 12h.The solvent was removed under reduced pressure, and the residue was separated and purified by silica gel column chromatography (ethyl acetate/petroleum ether (v/v)=10/1-3/1),The tert-butyl 6-chloropyridazine-3-carboxylate (7b) (1.5 g, yield: 56%) was obtained.
 

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Technical Information

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