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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

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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£ºC20H19N3O7S
MW£º445.45
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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