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CAS No. : | 31329-64-3 | MDL No. : | MFCD02681972 |
Formula : | C5H8N2O | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | INSUSOZBMWJGDG-UHFFFAOYSA-N |
M.W : | 112.13 | Pubchem ID : | 182040 |
Synonyms : |
|
Num. heavy atoms : | 8 |
Num. arom. heavy atoms : | 5 |
Fraction Csp3 : | 0.4 |
Num. rotatable bonds : | 0 |
Num. H-bond acceptors : | 2.0 |
Num. H-bond donors : | 1.0 |
Molar Refractivity : | 30.84 |
TPSA : | 52.05 Ų |
GI absorption : | High |
BBB permeant : | Yes |
P-gp substrate : | No |
CYP1A2 inhibitor : | No |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -6.64 cm/s |
Log Po/w (iLOGP) : | 1.38 |
Log Po/w (XLOGP3) : | 0.49 |
Log Po/w (WLOGP) : | 0.88 |
Log Po/w (MLOGP) : | -0.27 |
Log Po/w (SILICOS-IT) : | 1.0 |
Consensus Log Po/w : | 0.7 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 1.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -1.31 |
Solubility : | 5.54 mg/ml ; 0.0494 mol/l |
Class : | Very soluble |
Log S (Ali) : | -1.15 |
Solubility : | 7.89 mg/ml ; 0.0704 mol/l |
Class : | Very soluble |
Log S (SILICOS-IT) : | -1.59 |
Solubility : | 2.86 mg/ml ; 0.0255 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 0.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 2.38 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319-H335 | Packing Group: | N/A |
GHS Pictogram: |
* 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.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86% (8.10 g) | With ammonium chloride In water; ethyl acetate | Stage A 3,5-Dimethyl-4-isoxazolamine 12.00 g (84.44 mmol) of 3,5-dimethyl-4-nitroisoxazole are introduced into 430 ml of water, and 106.15 g (1.984 mol) of ammonium chloride are added. At 4° C., 46.93 g (7.17 mol) of zinc are added over the course of 2 h, ethyl acetate is added to the reaction solution, and the organic phase is filtered through Celite. After drying over magnesium sulfate, the solvent is removed by distillation, and the target compound is obtained in a yield of 86percent (8.10 g). 1H-NMR (300 MHz, CDCl3): δ=2.20 (s, 3H) ppm; 2.28 (s, 3H) ppm; 2.51 (broad s, 2H) ppm. |
86% (8.10 g) | With ammonium chloride In water; ethyl acetate | Stage A 3,5-Dimethyl-4-isoxazoleamine 12.00 g (84.44 mmol) of 3,5-dimethyl-4-nitroisoxazole are introduced into 430 ml of water, and 106.15 g (1.984 mol) of ammonium chloride are added. At 4° C., 46.93 g (7.17 mol) of zinc are added over the course of 2 h, ethyl acetate is added to the reaction solution, and the organic phase is filtered through Celite. After drying over magnesium sulphate, the solvent is removed by distillation and the target compound is obtained in a yield of 86percent (8.10 g). 1H-NMR (300 MHz, CDCl3): δ=2.20 (s, 3H); 2.28 (s, 3H); 2.51 (broad s, 2H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86% (8.10 g) | With ammonium chloride; In water; ethyl acetate; | Stage A 3,5-Dimethyl-4-isoxazolamine 12.00 g (84.44 mmol) of 3,5-dimethyl-4-nitroisoxazole are introduced into 430 ml of water, and 106.15 g (1.984 mol) of ammonium chloride are added. At 4 C., 46.93 g (7.17 mol) of zinc are added over the course of 2 h, ethyl acetate is added to the reaction solution, and the organic phase is filtered through Celite. After drying over magnesium sulfate, the solvent is removed by distillation, and the target compound is obtained in a yield of 86% (8.10 g). 1H-NMR (300 MHz, CDCl3): delta=2.20 (s, 3H) ppm; 2.28 (s, 3H) ppm; 2.51 (broad s, 2H) ppm. |
86% (8.10 g) | With ammonium chloride; In water; ethyl acetate; | Stage A 3,5-Dimethyl-4-isoxazoleamine 12.00 g (84.44 mmol) of 3,5-dimethyl-4-nitroisoxazole are introduced into 430 ml of water, and 106.15 g (1.984 mol) of ammonium chloride are added. At 4 C., 46.93 g (7.17 mol) of zinc are added over the course of 2 h, ethyl acetate is added to the reaction solution, and the organic phase is filtered through Celite. After drying over magnesium sulphate, the solvent is removed by distillation and the target compound is obtained in a yield of 86% (8.10 g). 1H-NMR (300 MHz, CDCl3): delta=2.20 (s, 3H); 2.28 (s, 3H); 2.51 (broad s, 2H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In toluene; at 130℃; for 0.166667h;Microwave irradiation; | 4-Methoxybenzoyl chloride ( 1 .5 g, 8.9 mmol), <strong>[31329-64-3]3,5-dimethylisoxazol-4-amine</strong> ( 1 .0 g, 8.9 mmol) and triethylamine ( 1 .5 mL, 1 1 mmol) were mixed in dry toluene ( 15 mL). The reaction was run at 130C for 10 min in the microwave reactor. 2 M NaOH and DCM were added, the phases were separated, and the solvents were evaporated to provide N-(3,5-dimethylisoxazol-4-yl)-4-methoxybenzamide (2.2 g, 8.8 mmol). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With thionyl chloride; triethylamine; In dichloromethane; N,N-dimethyl-formamide; toluene; | EXAMPLE 82 Compounds KK-KL thionyl chloride (0.46 ML) is added to a solution of 5-cyclopentyloxy-6-methoxynicotinic acid (500 mg; that is prepared as in Reference Example 48) and dimethylformamide (1 drop) in toluene (10 ML). The mixture is heated and stirred at reflux for 1 hour. The mixture is cooled and concentrated, and the residue is dissolved in dichloromethane (5 ML). This solution is added dropwise to a solution of 4-amino-3,5-dimethyl- isoxazole (168 mg) and triethylamine (0.21 ML) in dichloromethane (20 ML). The resulting mixture is stirred at room temperature for 2 hours then at reflux for 1 hour. The cooled mixture is washed with water, with aqueous hydrochloric acid (2 M), and with water, and then dried over magnesium sulphate. After concentration, the yellow oily residue is triturated with a mixture of n-pentane and methyl tert-butyl ether to give 5-cyclopentyloxy-N-(3,5-dimethylisoxazol-4-yl)-6-methoxynicotinamide (240 mg) in the form of a buff solid, m.p. 139-40C. [Elemental analysis: C,61.3; H,6.40; N,12.4%; calculated: C,61.6; H,6.39; N,12.68%]. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With N-ethyl-N,N-diisopropylamine; HATU; In DMF (N,N-dimethyl-formamide); at 20℃; | 4-Methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoic acid (507mg) wasdissolved in DMF (5ml). An aliquot (1ml) was treated with DIPEA (0.2ml) and HATU (180mg) and the mixture was stirred for 1 Omin at room temperature. 3,5-Dimethyl-4-isoxazolamine (65mg) was added and the mixture was stirred at room temperature overnight. The DMF was removed under a stream of nitrogen and the residue absorbed onto silica and purified by chromatography on a silica column eluting with cyclohexane/ethyl acetate (7:3). The resultant was tritureated with ether to give the title compound as a white solid (41 mg). LCMS: Rt 3.31 min, MH+ 357. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In dichloromethane; ethyl acetate; N,N-dimethyl-formamide; | EXAMPLE 8 7-Difluoromethoxy-2-(tetrahydrofuran-3-yl)-benzofuran-4-carboxylic acid (3,5-dimethylisoxazol-4-yl)-amide Oxalyl chloride (0.09 ml) was added to a stirred solution of 7-difluoromethoxy-2-(tetrahydrofuran-3-yl)-benzofuran-4-carboxylic acid (0.15 g) in dry dichloromethane (20 ml) at room temperature under a dry nitrogen atmosphere. N,N-dimethylformamide (catalytic amount) was added and the reaction allowed to stir for 2 hours. The solvent was removed in vacuo to furnish the corresponding acid chloride as a yellow oil. 3,5-Dimethylisoxazol-4-ylamine (0.11 g) was added to a stirred solution of the acid chloride in dry dichloromethane (30 ml) at room temperature under a dry nitrogen atmosphere. Triethylamine (0.14 ml) was added and the reaction allowed to stir at room temperature for 2 hours. The reaction was washed with water (30 ml) and 1N hydrochloric acid (30 ml). The organic phase was dried over magnesium sulphate, filtered and preadsorbed onto silica. Purification by column chromatography on silica eluding with 30% heptane in ethyl acetate yielded the title compound as a white solid (0.16 g). TLC Rf 0.17 (50% ethyl acetate in heptane) Mp 155.5-156.5 C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In hexane; dichloromethane; | EXAMPLE 15 7-Difluoromethoxy-2-methoxymethylbenzofuran-4-carboxylic acid (3,5-dimethylisoxazol-4-yl)-amide Cyanuric chloride (19 mg) and triethylamine (0.05 ml) were added to a stirred solution of 7-difluoromethoxy-2-methoxymethylbenzofuran-4-carboxylic acid (85 mg) in dry dichloromethane at room temperature under a dry nitrogen atmosphere. After stirring for 20 minutes <strong>[31329-64-3]3,5-dimethylisoxazol-4-ylamine</strong> (42 mg) was added and the reaction left overnight. The reaction was mixture was preadsorbed onto silica. Purification by column chromatography on silica eluding with 30% ethyl acetate in hexane gave the title compound as a cream solid (33 mg) TLC Rf 0.52 (50% ethyl acetate in hexane) Mass spectrum m/z 367 [M+H]. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In hexane; | EXAMPLE 9 7-Methoxy-2-(tetrahydrofuran-2-yl)-benzofuran-4-carboxylic acid (3,5-dimethylisoxazol-4-yl)-amide Starting from 7-methoxy-2-(tetrahydrofuran-2-yl)-benzofuran-4-carboxylic acid (262 mg) and <strong>[31329-64-3]3,5-dimethylisoxazol-4-ylamine</strong> (120 mg). Purification by column chromatography on silica eluding with 30% ethyl acetate in hexane afforded the title compound as an off-white solid (238 mg). TLC Rf 0.36 (50% ethyl acetate in hexane) Mass spectrum m/z 357 [M+H]. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hexamethyldisilazane; In tetrahydrofuran; n-heptane; water; N,N-dimethyl-formamide; | EXAMPLE 1 7-Methoxy-2-(tetrahydrofuran-3-yl)-benzofuran-4-carboxylic acid (3,5-dimethylisoxazol-4-yl)-amide To a stirred solution of <strong>[31329-64-3]3,5-dimethylisoxazol-4-ylamine</strong> (88 mg) in N,N-dimethylformamide (7 ml) under an atmosphere of dry nitrogen at room temperature was added sodium bis(trimethylsilyl)amide (0.78 ml, 1.0M solution in tetrahydrofuran). The reaction was stirred for 5 minutes. 7-Methoxy-2-(tetrahydro-furan-3-yl)-benzofuran-4-carboxylic acid 4-nitrophenyl ester (200 mg) was then added and stirring continued for 15 minutes. Water (1 ml) was added and the solvent was removed in vacuo. The resulting residue was purified by column chromatography on silica eluding with 50% ethyl acetate in heptane followed by trituration with diethyl ether affording the title compound as a cream solid (52 mg). TLC Rf 0.60 (50% ethyl acetate in heptane). Mp 183.5-185.2 C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
EXAMPLE 10 7-Methoxy-2-methoxymethylbenzofuran-4-carboxylic acid (3,5-dimethylisoxazol-4-yl)-amide Starting from 7-methoxy-2-methoxymethylbenzofuran-4-carboxylic acid (0.19 g) and <strong>[31329-64-3]3,5-dimethylisoxazol-4-ylamine</strong> (88 mg). Purification by column chromatography on silica eluding with ethyl acetate afforded the title compound as a cream solid (0.18 g). TLC Rf 0.17 (5% methanol in dichloromethane) Mp 168.5-169.5 C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In n-heptane; dichloromethane; N,N-dimethyl-formamide; | EXAMPLE 1 4-Difluoromethoxy-2-ethylbenzooxazole-7-carboxylic acid (3,5-dimethylisoxazole-4-yl)-amide Oxalyl chloride (0.2 ml) was added to a suspension of 4-difluoromethoxy-2-(piperidin-1-yl)-benzooxazole-7-carboxylic acid (0.3 g) in dichloromethane (20 ml) at room temperature under an atmosphere of nitrogen. Three drops of N,N-dimethylformamide were added, and the mixture stirred for 18 hours. The solvent was removed in vacuo and the residue dissolved in dichloromethane (20 ml). The resulting solution was added to a mixture of <strong>[31329-64-3]3,5-dimethylisoxazol-4-ylamine</strong> (0.16 g) and triethylamine (0.2 ml) in dichloromethane (20 ml) at room temperature under an atmosphere of nitrogen. The mixture was stirred for 2 hours, then washed with aqueous sodium bicarbonate (2*20 ml) and water (20 ml). The organics were dried over magnesium sulphate, filtered and the solvent removed in vacuo. Purification by column chromatography on silica eluding with 50% ethyl acetate in heptane afforded the title compound as a white solid (0.29 g). TLC Rf 0.65 (ethyl acetate). Mass spectrum m/z 350 (M-1) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
EXAMPLE 6 4-Methoxy-2-ethylbenzooxazole-7-carboxylic acid (3,5-dimethylisoxazol-4-yl)-amide Starting from 4-methoxy-2-ethylbenzooxazole-7-carboxylic acid (0.23 g) and <strong>[31329-64-3]3,5-dimethylisoxazol-4-ylamine</strong> (0.1 g). Purification by column chromatography on silica eluding with ethyl acetate afforded the title compound as a cream solid (0.18 g). TLC Rf 0.48 (ethyl acetate). M.p. 157-158.5 C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With thionyl chloride; triethylamine; In N-methyl-acetamide; dichloromethane; toluene; pentane; | EXAMPLE 17 Compound CQ Thionyl chloride (0.46 mL) is added to a solution of 5-cyclopentyloxy-6-methoxynicotinic acid (500 mg) and dimethylformamide (1 drop) in toluene (10 mL). The mixture is heated and stirred at reflux for 1 hour. The mixture is cooled, concentrated, and the residue dissolved in dichloromethane (5 mL). This solution is added dropwise to a solution of 4-amino-3,5-dimethylisoxazole (168 mg) and triethylamine (0.21 mL) in dichloromethane (20 mL). The resulting mixture is stirred at room temperature for 2 hours then at reflux for 1 hour. The cooled mixture is washed with water, 2 M aqueous hydrochloric acid, water, then dried (MgSO4). After concentration the yellow oily residue is triturated with a mixture of n-pentane and methyl t.butyl ether to give 5-cyclopentyloxy-N-(3,5-dimethylisoxazol-4-yl)-6-methoxynicotinamide (240 mg) as a buff solid, m.p. 139-40 C. [Elemental analysis: C, 61.3; H, 6.40; N, 12.4% calculated: C, 61.6; H, 6.39; N, 12.68%.] |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In dichloromethane; | EXAMPLE 1 2-Ethyl-4-methoxybenzothiazole-7-carboxylic acid (3,5-dimethylisoxazol-4-yl)amide To a suspension of 2-ethyl-4-methoxybenzothiazole-7-carboxylic acid (0.1 g) in dichloromethane (10 ml) was added oxalyl chloride (0.08 ml) and dimethylformanide (1 drop). The reaction was stirred at room temperature for 16 hrs, and then the solvent was removed in vacuo to yield a brown solid residue. This was taken up in dichloromethane is (30 ml) and <strong>[31329-64-3]3,5-dimethylisoxazol-4-amine</strong> (0.05 g) was added followed by triethylamine (0.15 ml) and the reaction stirred at room temperature for 16 hrs. The solvent was removed in vacuo and the product purified by flash chromatography (eluent ethyl acetate) to yield the title compound as an off-white solid (0.016 g). TLC Rf 0.38 (ethyl acetate); Mpt 85-87 C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In N-methyl-acetamide; dichloromethane; | EXAMPLE 3 2-Cyclopropyl-4-methoxybenzothiazole-7-carboxylic acid (3,5-dimethylisoxazol-4-yl)amide Starting from 2-cyclopropyl-4-methoxybenzothiazole-7-carboxylic acid (0.20 g), oxalyl chloride (0.11 ml), dichloromethane (30 ml) and dimethylformamide (1 drop), followed by <strong>[31329-64-3]3,5-dimethylisoxazol-4-amine</strong> (0.20 g), triethylamine (0.22 ml) and dichloromethane (30 ml). Purification by flash chromatography (eluent 50% ethyl acetate/heptane) yielded the title compound as a white solid (0.067 g). TLC Rf 0.33 (ethyl acetate); Mpt 196-197 C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In diethyl ether; hexane; | EXAMPLE 31 7-Difluoromethoxy-2-ethylfuro[2,3-c]pyridine-4-carboxylic acid (3,5-dimethylisoxazol-4-yl)amide This Example was conducted following the procedure of Example 1, but starting from 7-difluoromethoxy-2-ethylfuro[2,3-c]pyridine-4-carboxylic acid 4-nitrophenyl ester (200 mg) and <strong>[31329-64-3]3,5-dimethylisoxazol-4-ylamine</strong> (118 mg). Purification by column chromatography on silica eluding with 30% ethyl acetate in hexane followed by trituration in diethyl ether afforded the title compound as an off-white solid (18 mg). TLC Rf 0.38 (50% ethyl acetate in hexane) |
Tags: 31329-64-3 synthesis path| 31329-64-3 SDS| 31329-64-3 COA| 31329-64-3 purity| 31329-64-3 application| 31329-64-3 NMR| 31329-64-3 COA| 31329-64-3 structure
[ 127107-28-2 ]
3,5-Dimethylisoxazol-4-amine hydrochloride
Similarity: 0.98
[ 225094-34-8 ]
5-Ethyl-3-methylisoxazol-4-amine
Similarity: 0.89
[ 100499-66-9 ]
5-Methylisoxazol-4-amine hydrochloride
Similarity: 0.85
[ 127107-28-2 ]
3,5-Dimethylisoxazol-4-amine hydrochloride
Similarity: 0.98
[ 225094-34-8 ]
5-Ethyl-3-methylisoxazol-4-amine
Similarity: 0.89
[ 100499-66-9 ]
5-Methylisoxazol-4-amine hydrochloride
Similarity: 0.85
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P402 + P404 | Store in a dry place. Store in a closed container. |
P403 + P233 | Store in a well-ventilated place. Keep container tightly closed. |
P403 + P235 | Store in a well-ventilated place. Keep cool. |
P410 + P403 | Protect from sunlight. Store in a well-ventilated place. |
P410 + P412 | Protect from sunlight. Do not expose to temperatures exceeding 50 oC/122oF. |
P411 + P235 | Keep cool. |
Disposal | |
Code | Phrase |
P501 | Dispose of contents/container to ... |
P502 | Refer to manufacturer/supplier for information on recovery/recycling |
Physical hazards | |
Code | Phrase |
H200 | Unstable explosive |
H201 | Explosive; mass explosion hazard |
H202 | Explosive; severe projection hazard |
H203 | Explosive; fire, blast or projection hazard |
H204 | Fire or projection hazard |
H205 | May mass explode in fire |
H220 | Extremely flammable gas |
H221 | Flammable gas |
H222 | Extremely flammable aerosol |
H223 | Flammable aerosol |
H224 | Extremely flammable liquid and vapour |
H225 | Highly flammable liquid and vapour |
H226 | Flammable liquid and vapour |
H227 | Combustible liquid |
H228 | Flammable solid |
H229 | Pressurized container: may burst if heated |
H230 | May react explosively even in the absence of air |
H231 | May react explosively even in the absence of air at elevated pressure and/or temperature |
H240 | Heating may cause an explosion |
H241 | Heating may cause a fire or explosion |
H242 | Heating may cause a fire |
H250 | Catches fire spontaneously if exposed to air |
H251 | Self-heating; may catch fire |
H252 | Self-heating in large quantities; may catch fire |
H260 | In contact with water releases flammable gases which may ignite spontaneously |
H261 | In contact with water releases flammable gas |
H270 | May cause or intensify fire; oxidizer |
H271 | May cause fire or explosion; strong oxidizer |
H272 | May intensify fire; oxidizer |
H280 | Contains gas under pressure; may explode if heated |
H281 | Contains refrigerated gas; may cause cryogenic burns or injury |
H290 | May be corrosive to metals |
Health hazards | |
Code | Phrase |
H300 | Fatal if swallowed |
H301 | Toxic if swallowed |
H302 | Harmful if swallowed |
H303 | May be harmful if swallowed |
H304 | May be fatal if swallowed and enters airways |
H305 | May be harmful if swallowed and enters airways |
H310 | Fatal in contact with skin |
H311 | Toxic in contact with skin |
H312 | Harmful in contact with skin |
H313 | May be harmful in contact with skin |
H314 | Causes severe skin burns and eye damage |
H315 | Causes skin irritation |
H316 | Causes mild skin irritation |
H317 | May cause an allergic skin reaction |
H318 | Causes serious eye damage |
H319 | Causes serious eye irritation |
H320 | Causes eye irritation |
H330 | Fatal if inhaled |
H331 | Toxic if inhaled |
H332 | Harmful if inhaled |
H333 | May be harmful if inhaled |
H334 | May cause allergy or asthma symptoms or breathing difficulties if inhaled |
H335 | May cause respiratory irritation |
H336 | May cause drowsiness or dizziness |
H340 | May cause genetic defects |
H341 | Suspected of causing genetic defects |
H350 | May cause cancer |
H351 | Suspected of causing cancer |
H360 | May damage fertility or the unborn child |
H361 | Suspected of damaging fertility or the unborn child |
H361d | Suspected of damaging the unborn child |
H362 | May cause harm to breast-fed children |
H370 | Causes damage to organs |
H371 | May cause damage to organs |
H372 | Causes damage to organs through prolonged or repeated exposure |
H373 | May cause damage to organs through prolonged or repeated exposure |
Environmental hazards | |
Code | Phrase |
H400 | Very toxic to aquatic life |
H401 | Toxic to aquatic life |
H402 | Harmful to aquatic life |
H410 | Very toxic to aquatic life with long-lasting effects |
H411 | Toxic to aquatic life with long-lasting effects |
H412 | Harmful to aquatic life with long-lasting effects |
H413 | May cause long-lasting harmful effects to aquatic life |
H420 | Harms public health and the environment by destroying ozone in the upper atmosphere |
Sorry,this product has been discontinued.
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