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Chemical Structure| 372118-00-8 Chemical Structure| 372118-00-8
Chemical Structure| 372118-00-8

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CAS No.: 372118-00-8

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Product Details of [ 372118-00-8 ]

CAS No. :372118-00-8
Formula : C6H6N2O4
M.W : 170.12
SMILES Code : O=C(C1=NN=C(O)C=C1O)OC
MDL No. :MFCD09953611
Boiling Point : No data available
InChI Key :SHJHUIKJFYHTDY-UHFFFAOYSA-N
Pubchem ID :56604115

Safety of [ 372118-00-8 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Calculated chemistry of [ 372118-00-8 ] Show Less

Physicochemical Properties

Num. heavy atoms 12
Num. arom. heavy atoms 6
Fraction Csp3 0.17
Num. rotatable bonds 2
Num. H-bond acceptors 6.0
Num. H-bond donors 2.0
Molar Refractivity 37.36
TPSA ?

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

92.54 ?2

Lipophilicity

Log Po/w (iLOGP)?

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

1.01
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

0.21
Log Po/w (WLOGP)?

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

-0.33
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.

-0.77
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

-0.19
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

-0.01

Water Solubility

Log S (ESOL):?

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

-1.27
Solubility 9.24 mg/ml ; 0.0543 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.

-1.71
Solubility 3.3 mg/ml ; 0.0194 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

-0.57
Solubility 45.5 mg/ml ; 0.267 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.

-7.19 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.

0.55

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)

2.19

Application In Synthesis [ 372118-00-8 ]

* 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 [ 372118-00-8 ]

[ 372118-00-8 ] Synthesis Path-Downstream   1~26

  • 1
  • [ 83878-89-1 ]
  • [ 372118-00-8 ]
YieldReaction ConditionsOperation in experiment
30% Step 2 4,6-Dihydroxy-pyridazine-3-carboxylic acid methyl ester A mixture of 2-diazo-3-oxo-pentanedioic acid dimethyl ester (50.0 g, 249.8 mmol) and triphenylphosphine (65.5 g, 249.8 mmol) in diethyl ether (500 mL) was stirred at room temperature for 24 h. The organic solvent was removed under vacuum and then acetic acid (500 mL) and water (50 mL) were added to the residue and the mixture was refluxed for 10 h. The reaction mixture was concentrated under reduced pressure to obtain a viscous residue. Trituration with ethyl acetate generated a yellow solid that was purified by chromatography (silica, 100-200 mesh, 1-5% methanol in dichloromethane) to give 4,6-dihydroxy-pyridazine-3-carboxylic acid methyl ester (12.8 g, 30%) as a yellow solid. LC-MS 169.2 [M+H]+.
A mixture of 2-diazo-3-oxo-pentanedioic acid dimethyl or diethyl ester (0.1 mol) and PPh3 (26.3 g, 0.1 mol) in ether (200 mL) is stirred at room temperature for 24 hours. Ether is removed in vacuo and HOAc (200 mL) and water (20 mL) are added to the residue. The mixture is then refluxed for 10 hours under nitrogen. The solvent is removed in vacuo and CHCl3 (150 mL), MeOH (150 mL) and silica gel (65 g) are added to the residue. The mixture is evaporated to dryness. The resultant yellow powder is then packed on the top of a column (480 g silica) and eluted with CHCl3:MeOH, 50:1 to 5:1. The desired 4,6 dihydroxy-pyridazine-3-carboxylic acid methyl or ethyl ester is obtained as a light yellow solid.
  • 2
  • [ 372118-00-8 ]
  • [ 372118-01-9 ]
YieldReaction ConditionsOperation in experiment
72% With trichlorophosphate; at 95.0℃; for 5h; Step 3 4,6-Dichloro-pyridazine-3-carboxylic acid methyl ester A mixture of <strong>[372118-00-8]4,6-dihydroxy-pyridazine-3-carboxylic acid methyl ester</strong> (10.5 g, 61.7 mmol) and POCl3 (70 mL) was heated to 95 C. for 5 h. The excess POCl3 was removed under reduced pressure, then the crude residue was added to ice-water (250 mL) and extracted with ethyl acetate (3*100 mL). The combined extracts were dried then concentrated to give a crude residue which was purified by chromatography (silica, 100-200 mesh, 30% ethyl acetate in hexane) to give 4,6-dichloro-pyridazine-3-carboxylic acid methyl ester (9.2 g, 72%) as an off white solid. LC-MS: 207.0 [M+H]+.
64.3% With trichlorophosphate; for 3h;Reflux; A slurry of <strong>[372118-00-8]methyl 4,6-dihydroxypyridazine-3-carboxylate</strong> (11.7 g, 68.8 mmol) in POCl3 (110 mL, 1180 mmol) was heated to reflux for 3h during which time the mixture became a nearly homogeneous dark brown solution. The reaction mixture was cooled to rt, allowed to stand overnight and concentrated in vacuo. The resulting dark brown residue was dissolved in DCM (?300 mL) and was slowly poured onto ?500 mL of crushed ice with swirling of the flask. After the addition was complete, water was slowly added (?200 mL) until the mixture became stirrable and the mixture was stirred while warming to rt over ?3 h. The resulting phases were separated and the aqueous portion was extracted with additional DCM (3*100 mL). The combined extracts were washed with brine, dried over anhydrous sodium sulfate, decanted and concentrated under vacuum to afford a white solid as the pure product, methyl 4,6-dichloropyridazine-3-carboxylate (9.16 g, 44.2 mmol, 64.3% yield). Material was used as is without any further purification. MS (M+1) m/z: 206.9 (MH+). LC retention time 0.80 min [A].
With trichlorophosphate; at 95.0℃; for 4h; Step 3.Preparation of 4,6-dichloro-pyridazine-3-carboxylic acid methyl or ethyl ester 5 A mixture of 4,6-dihydroxy-pyridazine-3-carboxylic acid methyl or ethyl ester (50 mmol) and POCl3 (90 ML) is heated at 95 C. for 4 hours.The excess POCl3 is evaporated in vacuo and to the residue cooled to 0 C. was added ice (150 g) followed by EtOAc (200 ML).The layers are separated and the aqueous layer is extracted with EtOAc (2*100 ML).The combined extracts are washed with brine (200 ML), dried (Na2SO4) and evaporated in vacuo.This residue is purified by flash column chromatography (225 g silica gel, eluted with 4:1 hexane, EtOAc).The desired 4,6 dichloro-pyridazine-3-carboxylic acid methyl ester is obtained as a white solid, while the 4,6 dichloro-pyridazine-3-carboxylic acid ethyl ester is a colorless liquid.
  • 4
  • [ 372118-00-8 ]
  • [ 1446791-52-1 ]
  • 5
  • [ 372118-00-8 ]
  • [ 1446791-54-3 ]
  • 6
  • [ 372118-00-8 ]
  • [ 1446790-50-6 ]
  • 7
  • [ 372118-00-8 ]
  • methyl 6-chloro-4-(5-chloro-6-methylpyridin-2-ylamino)pyridazine-3-carboxylate [ No CAS ]
  • 8
  • [ 372118-00-8 ]
  • [ 1446792-00-2 ]
  • 9
  • [ 372118-00-8 ]
  • 6-chloro-4-(5,6-dimethoxy-pyridin-2-ylamino)-pyridazine-3-carboxylic acid methyl ester [ No CAS ]
  • 16
  • [ 372118-00-8 ]
  • [ 1446792-27-3 ]
  • 17
  • [ 372118-00-8 ]
  • [ 1446792-29-5 ]
  • 18
  • [ 372118-00-8 ]
  • [ 1446792-31-9 ]
  • 19
  • [ 372118-00-8 ]
  • [ 1446790-75-5 ]
  • 20
  • [ 372118-00-8 ]
  • [ 1446792-71-7 ]
  • 21
  • [ 372118-00-8 ]
  • [ 1446790-90-4 ]
  • 22
  • [ 372118-00-8 ]
  • methyl 6-chloro-4-(5-(methylsulfonyl)pyridin-2-ylamino)pyridazine-3-carboxylate [ No CAS ]
  • 23
  • [ 372118-00-8 ]
  • [ 1446791-31-6 ]
  • 24
  • [ 372118-00-8 ]
  • [ 1446791-33-8 ]
  • 25
  • [ 372118-00-8 ]
  • [ 1446791-35-0 ]
  • 26
  • [ 372118-00-8 ]
  • [ 1446791-39-4 ]
 

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