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TAEM, an intermediate for the preparation of ceftazidime
Cas Number: 89604-92-2
Chemical name 2-Mercaptobenzolyl-¦Á-(2-Aminothiazol-4-yl)-¦Á-[(tert-Butoxycarbonyl)-Isopropoxyimino]Acetate 

CEPHALOSPORIN SIDE CHAINS 

1) 4-METHYLTHIAZOLE-5-CARBOXALDEHYDE (CAS No.82294-70-0) CEFDITORIN PIVOXIL
 
2) 2-Mercapto-5-Methyl-1, 3, 4-Thiadiazole MMTD      99%     Cefazolin
 
3) 1H-Tetrazolyl-1-Acetic Acid         TAA          99%    Cefazolin/Ceftezol
 
4) 2-Marcepto-1, 3, 4-Thiadiazole        2-MTD      98%     Ceftezol
 
5) D-(-)-α-(4-Ethyl-2, 3-Dioxo-1-Piperazinyl-Carbonylamino)-α-(4-Hydroxyphenyl)-Acetic Acid  HO-EPCP 99%     Cefoperazone
 
6) 5-Mercapto-1-Methyl-Tetrazole               MMTZ    99%     Cefoperazone   
         
7) Ethyl-(Z)-2-Hydroxyimino-2-(2-Aminothiazole-4-yl) Acetate           EHATA    97%     Ceftazidime/Cefdinir
 
8) (Z)-2-Hydroxyimino-2-(2-Aminothiazole-4-yl) Acetic Acid              HATA      98%     Ceftazidime/Cefdinir
 
9) (Z)-2-(2-Tert-Butoxy Carbonyl Prop-2-Oxy Imino)-(2-Aminothiazol-4-yl)-Acetic Acid      ATTBA      98%     Ceftazidime
 
10) Benzothiazol-a-yl-(z)-2-(Tert-Butoxycarbonylprop-2-OxyImino-2-(2-Aminothiazol-4-yl) Thioacetate  TAEM           98%  Ceftazidime
 
11) 2-(2-Aminothiazol--4-yl)-2-Methoxyimino- Acetic Acid Anhydrous    ATMAA      99% Ceftriaxone
 
12) Benzothiazol-2-(2-Aminothiazol-4-yl)-(Z)-2-Methoxyimino Thioacetate   MAEM 98%   Ceftriaxone/Cefotaxime
 
13) 5-Oxo-6-Hydroxy-3-Mercapto-2-Methyl-2,5-Dihydro-1,2,4-Triazine          TTZ      99% Ceftriaxone
 
14) 7-Amino-3-Vinyl-3-Cephem-4-Carboxylic Acid
 
15) Diphenylmethyl Ester Hydrochloride       7-AVCA 96%  Cefixime/Cefdinir
 
16) 4-Chloro-2- (2)-MethoxyCarbonyMethoxyimino-3-oxobutyric Acid CMOBA 97.5% Cefixime
 
17) (Z)-2-Methoxyimino-Furyl-Acetic Acid Ammonium Salt                   SMIA            98.5%  Cefuroxime
 
18) 4-Ethyl-2, 3-Dioxo-Piperazinyl Carbonyl Chloride  EDP-Cl         90% Piperacillin Acid