863971-24-8|6-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)-N-((S)-1-(((S)-1-(((3R,4S,5S)-1-((S)-2-((1R,2R)-3-(((1S,2R)-1-hydroxy-1-phenylpropan-2-yl)amino)-1-methoxy-2-methyl-3-oxopropyl)pyrrolidin-1-yl)-3-methoxy-5-methyl-1-oxoheptan-4-yl)(methyl)amino)-3-methyl-1-oxobutan-2-yl)amino)-3-methyl-1-oxobutan-2-yl)-N-methylhexanamide| Ambeed

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Yield	Reaction Conditions	Operation in experiment
36%	With diethyl cyanophosphonate; N-ethyl-N,N-diisopropylamine; In dichloromethane; at 20℃; for 12h;Inert atmosphere;	To a suspension of MMAE (0.05 g, 0.0694 mmol) in freshly distilled dry DCM (2 ml), 6-maleimidocaproic acid (0.0221 g, 0.104 mmol) was added followed by diethylcyanophosphonate (21 muIota, 0.139 mmol) and DIPEA (37 muIota, 0.208 mmol). On addition of DIPEA, the reaction mixture became clear and was stirred at room temperature under nitrogen for 12 h, TLC [silica gel: 5percent MeOH/DCM, Rf 0.31]. The reaction mixture was diluted with DCM (30 ml) and washed with 10percent citric acid (2 X 20 ml), water (20 ml), brine (20 ml) and concentrated to dryness. The crude was purified by flash column chromatography [silica gel: 5percent MeOH/DCM] to give 6- Maleimidocaproyl-MMAE 37 as a white solid 0.023 g (36percent). MS (m/z) found 911.58 (M+1) calculated for C49H79N6O10

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P304 + P340	IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
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P401
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Ghs Hazard Statements

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
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H221	Flammable gas
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H231	May react explosively even in the absence of air at elevated pressure and/or temperature
H240	Heating may cause an explosion
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H242	Heating may cause a fire
H250	Catches fire spontaneously if exposed to air
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H260	In contact with water releases flammable gases which may ignite spontaneously
H261	In contact with water releases flammable gas
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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
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H317	May cause an allergic skin reaction
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H330	Fatal if inhaled
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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

CAS No. :	863971-24-8	MDL No. :	MFCD28167757
Formula :	C₄₉H₇₈N₆O₁₀	Boiling Point :	-
Linear Structure Formula :	-	InChI Key :	-
M.W :	911.18	Pubchem ID :	-
Synonyms :	Maleimidocaproyl-monomethylauristatin E	Chemical Name :	6-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)-N-((S)-1-(((S)-1-(((3R,4S,5S)-1-((S)-2-((1R,2R)-3-(((1S,2R)-1-hydroxy-1-phenylpropan-2-yl)amino)-1-methoxy-2-methyl-3-oxopropyl)pyrrolidin-1-yl)-3-methoxy-5-methyl-1-oxoheptan-4-yl)(methyl)amino)-3-methyl-1-oxobutan-2-yl)amino)-3-methyl-1-oxobutan-2-yl)-N-methylhexanamide

Signal Word:	Warning	Class:
Precautionary Statements:	P501-P270-P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313-P301+P312+P330	UN#:
Hazard Statements:	H302-H315-H319	Packing Group:
GHS Pictogram:

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[ 863971-24-8 ] Synthesis Path-Downstream 1~1

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