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1¡¢4-acetoxyazetidin-2-one (4-AA , 4-ABA or 4-AOSA)£»
(3R,4R)-4-acetoxy-3-[(1R)-1-t-butyldimethylsilyloxyethyl]azetidin-2-one. or
[3R-[3¦Á(R*),4¦Â] ]-4-(acetyloxy)-3-[1-[[(1,1-dimethylethyl)dimethlsilyl]oxy]
ethyl]azetidin-2-one.
Structural Formula:

Molecular Formula£ºC13H25NO4Si
MW£º287.43
CAS£º[76855-69-1]
Optical Purity£º99% e e
Assay£º¡Ý98.5%
[¦Á]D25: +46¡«+49¡ã(c=0.98 CHCl3)
Mp£º104¡«108¡æ
Containing Water£º¡Ü0.2%
2¡¢¦Â-methylazetidin-2-one (1-BMA or 4-BMA)£»
(3S,4S)-4-[(R)-1-carboxyethyl]-3-[(R)-1-(t-butyldimethylsilyloxy)ethyl]-2-azetidinone. or
[2R-[2¦Á(R*),3¦Â(R*)] ]-3-[1-[[(1,1-dimethylethyl)dimethylsilyl]oxy]ethyl]-¦Á-methl-4-
oxo-2-azetidineacetic acid.
Structural Formula£º

Molecular Formula£ºC14H27NO4Si
MW£º301.45
CAS£º[90776-58-2]
Appearance: power with white or alike color
Mp£º146-147¡æ
[¦Á]D20: +30¡«+35¡ã
Moisture£º¡Ü0.5%
Assay£º¡Ý98%
Container£º20kg/bucket
Reposition£º-8~10¡æ
3¡¢1¦Â-methyl vinyl phosphate (MAP or MVP)£»
PNB (4R,5S,6S)-3-(diphenyloxy)phosphoryloxy-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3,2,0]hept-2-ene-2-carboxylate. or
PNB (1R,5S,6S)-2-(diphenyloxy)phosphoryloxy-6-[(1R)-1-hydroxyethyl]-1-methyl-1-carbapen-2-em-3-carboxylate. or
[4R-[4¦Á, 5¦Â,6¦Â(R*)] ]-3-[(diphenoxyphosphinyl)oxy] -6- (1-hydroxyethyl) -4- methyl -7- oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid,(4-nitrophenyl)methyl ester.

Structural Formula£º

Molecular Formula£ºC29H27N2O10P
MW£º594.52
CAS No£º[90776-59-3]
Appearance: power with white or alike color
Mp£º126-130¡æ
[¦Á]D20: +45¡«+55¡ã
Moisture£º¡Ü0.5%
Assay£º¡Ý98%
Container£º20kg/bucket
Reposition£º-8~10¡æ

4¡¢side chain for meropenem (2S-CIS)£º
(2S,4S) -2-(dimethylaminocarbonyl)-4-mercapto-1- (p-nitrobenzyloxycarbonyl)
-1-pyrrolidine. or
(2S-cis)- 2-[(dimethylamino)carbonyl]-4-mercapto-1-pyrrolidinecarboxylic acid, (4-nitro
phenyl) methyl ester.
Structural Formula£º

Molecular Formula£ºC15H19N3O5S
MW£º353.40
CAS No£º[96034-64-9]
Appearance: power with white or light yellow color
Mp: 117-119.5¡æ
[¦Á]D20= +9.60- +9.75 (c=1.01, CHCl3)
Moisture£º¡Ü0.5%
Assay: ¡Ý97% (HPLC)
Container£º20kg/bucket
Reposition£º-8~20¡æ¡£

5¡¢protected meropenem£º
(4R,5S,6S)- 4-nitrobenzyl-3-[[(3S,5S)-5-[(dimethylamino)carbonyl]-1-[[(4- nitrobenzyl) oxy] carbonyl] -3- pyrrolidinyl]thio] -6- [(1R) -1- hydroxyethyl] -4- methyl -7-oxo-1-azabicyclo[3,2,0]hept-2-ene-2-carboxylate or
3-[[5-[( dimethylamino)carbony pyrrolidinyl] thio] -6- (1-hydroxyethyl) -4- methyl -7- oxo -1- azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid, (4-nitrophenyl)methyl ester.

Structural Formula£º

Molecular Formula£ºC32H35N5O11S;
MW£º697.71;
CAS No£º[96036-02-1]
Appearance£ºpower with white or alike color
Mp£º 150-153¡æ£¨decompound£©
[¦Á]D20£º+12- +16 (c=1, CH3OH)
Moisture£º¡Ü0.5%
Assay£º ¡Ý96% (HPLC)
Container£º20kg/bucket
Reposition£º0~20¡æ¡£

6¡¢[5R-(5¦Á,6¦Á(R*))]-6-(1-hydroxyethyl)-3,7-dioxo-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (4-nitrophenyl)methyl ester



Molecular Formula: C16H16N2O7
MW: 348.32
CAS¡¡No: [74288-40-7]
Appearance£ºpower with white or alike color
Mp: 109~114¡ãC (decompound)
[¦Á]D20: £«103~+108¡¡(c=1,CHCl3)
Moisture£º¡Ü0.5%
assay: ¡Ý96%(HPLC)
Container£º20kg/bucket
Reposition£º0~20¡æ

7¡¢bis protected imipenem
[5R-¦Á,6¦Á(R*)]]- 6-(1-hydroxyethyl)-3-[[2-[[[[[(4-nitrophenyl)methoxy]carbonyl]amino]methylene]amino]ethyl]thio]-7-oxo-1£­azabicyclo[3,2,0]hept-2-ene-2-carboxylic acid,
(4-nitrophenyl)methyl ester,
or 
(5R,6S)- 4-nitrobenzyl-3-[[2-[[[[[(4-nitrophenyl)methoxy]carbonyl]amino] methylene]amino]ethyl]thio]-6-[(1R)-1-hydroxyethyl]- 7-oxo-1-azabicyclo [3,2,0]hept-2-ene-2-carboxylate

Molecular Formula: C27H27N5O10S
MW: 613.61
CAS¡¡No: [98367-45-4]
Appearance£ºwhite or light yellow power
Moisture£º¡Ü0.5%
Assay: ¡Ý94%(HPLC)
Container£º20kg/bucket
Reposition£º0~20¡æ
8¡¢protected thiencin hydrochloride
(5R,6S) p-Nitrobenzyl-3-[(2-aminoethyl)thio]-6-[(1R)-1-hydroxyethyl]-1-azabicyclo[3.2.0]hept-2-ene-7-one-2- carboxylate hydrochloride

Molecular Formula£ºC18H21N3O6S.HCl
MW£º443.91
CAS¡¡No: [442847-69-0]
Appearance£ºpower with white or alike color
Moisture£º¡Ü0.5%
assay: ¡Ý94%(HPLC)
Container£º20kg/bucket
Reposition£º0~20¡æ
9¡¢Thienamycin p-nitrobenzylester hydrochloride (N-methylpyrrolidinonesolvate
CAS No: 442847-66-7
10¡¢Side Chain for imipenem
N-(N-p-nitrobenzyloxycarbonyl)-formimidoyl-2-aminoethylthiol
HSCH2CH2NHCH=N-PNZ
Molecular Formula:C11H13N3O4S
MW: 283.31
Appearance£ºwhite or light yellow power
Moisture£º¡Ü0.5%
assay: ¡Ý94%(HPLC)
Container£º20kg/bucket
Reposition£º0~20¡æ

11¡¢side chain for penipenem;
4-nitrobenzyl-1-((S)-3-mercaptopyrrolidin-1-yl)ethylidenecarbamate

12¡¢side chain for biapenem;
6,7-dihydro-6-mercapto-5H-pyrazolo[1,2-a][1,2,4]triazolium chloride or
6,7-dihydro-6-mercapto-5H-pyrazolo[1,2-a][1,2,4]triazol-4-ium,chloride

Structural Formula£º


Molecular Formula£ºC5H8ClN3S;
MW£º177.66
CAS No£º[153851-71-9]
Appearance£ºwhite or alike color power
Moisture£º¡Ü0.5%
assay: ¡Ý98%(HPLC)
Container£º20kg/bucket
Reposition£º0~20¡æ

13¡¢side chain for ertapenem.
3-[[[(2S, 4S)-4-mercapto-1-(4-nitrobenzyloxy)carbonyl-2-pyrrolidinyl]carbonyl]amino]
benzoic acid or
4-nitrobenzyl, (2S, 4S)-2-[[(3-carboxyphenyl)amino]carbonyl]-4-mercapto-1- pyrrolidinecarboxylate  or
(2S,4S) -2-[(3-carboxyphenyl)carbamoyl]-4-mercapto-1- (p-nitrobenzyloxycarbonyl)-1-pyrrolidine or
(2S,4S) -2-[
[(3-carboxyphenyl)amino]carbonyl]-4-mercapto-1- (p-nitrobenzyloxycarbonyl)-1-pyrrolidine or
(2S-cis)- 2-
[[(3-carboxyphenyl)amino]carbonyl]-4-mercapto-1-pyrrolidinecarboxylic acid, (4-nitrophenyl) methyl ester.


Molecular Formula£º
C20H19N3O7S
MW£º
445.45
CAS No£º
[202467-69-4]
Appearance£ºwhite or alike color power
Moisture£º¡Ü0.5%
assay: ¡Ý98%(HPLC)
Container£º20kg/bucket
Reposition£º0~20¡æ

14¡¢4-benzoyloxy azetidin-2-one (4-BA , 4-BBA or 4-BOSA)
(3R,4R)-4-benzoyloxy-3-[(1R)-1-t-butyldimethylsilyloxyethyl]azetidin-2-one. or
[3R-[3¦Á(R*),4¦Â] ]-4-(benzoyloxy)-3-[1-[[(1,1-dimethylethyl)dimethlsilyl]oxy]ethyl]azetidin-2-one.
Structural Formula£º£º

    

Molecular Formula£ºC18H27NO4Si
MW£º349.51
CAS¡¡No:[94944-10-2]

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