CEFALEXIN

PRODUCT IDENTIFICATION

CAS NO.

15686-71-2 (Parent)
23325-78-2 (monohydrate)

CEFALEXIN

EINECS NO. 239-773-6
FORMULA

C16H17N3O4S

MOL WT.

347.39

H.S. CODE

 

TOXICITY

 
SYNONYMS

Cefanex; Cephalexin; C-Lexin; Ibilex; Keflet; Keflex;

7-(D-alpha-amino-alpha-phenylacetamido)-3-methyl-3-cephem-4-carboxylic acid;

CLASSIFICATION

ANTIBOITICS / CEPHALOSPORINS /

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE white to off-white powder
MELTING POINT  
BOILING POINT  
SPECIFIC GRAVITY  
SOLUBILITY IN WATER  
pH  
VAPOR DENSITY

 

AUTOIGNITION

 

NFPA RATINGS  

REFRACTIVE INDEX

 
FLASH POINT

 

STABILITY

Stable under ordinary conditions

GENERAL DESCRIPTION & APPLICATIONS

Cefalexin is a semisynthetic 1st generation cephalosporin antibiotic Inhibiting cell wall biosynthesis. It is used especially in the treatment of respiratory and urinary tract infections and is intended for oral administration. Cephalosporins differ from penicillins in the structure of the bicyclic ring system. Cefalexin has an unsubstituted methyl group at the 3-position and a D-phenylglycyl group as substituent at the 7-amino position. It's chemical name is 7-(D-alpha-Amino- alpha-phenyl acetamido)- 3-methyl-3-cephem- 4-carboxylic acid. Commercial cefalexin is available in a monohydrate form which is a white crystalline powder with a bitter taste and low solubility in water.

1ST GENERATION CEPHALOSPORIN

CAS RN

Cefacetrile

10206-21-0

Cefacetrile sodium

23239-41-0

Cefadroxil Monohydrate

66592-87-8

Cefadroxil anhydrous

50370-12-2

Cefalexin

15686-71-2; 23325-78-2

Pivcefalexin hydrochloride

27726-31-4

Pivcefalexin

63836-75-9

Cefacetrile

10206-21-0

Cefaloglycin

3577-01-3; 22202-75-1

Deacetylcefaloglycin

3890-34-4

Cefalonium

5575-21-3

Cefaloridine

50-59-9

Cefalotin Sodium

58-71-9

Cefalotin

153-61-7

Cefapirin Sodium

24356-60-3

Cefapirin

21593-23-7

Cefatrizine

51627-14-6

Cefazaflur sodium

52123-49-6

Cefazaflur

58665-96-6

Cefazedone

56187-47-4

Cefazedone sodium

63521-15-3

Cefazedone

56187-47-4
Cefazolin Sodium

27164-46-1

Cefazolin delta-2-methyl ester

79239-19-3

Cefazolin delta-3-methyl ester

117929-10-9

Cefazolin

25953-19-9

Cefradine

38821-53-3

Cefroxadine dihydrate

95615-72-8

Cefroxadine

51762-05-1

Ceftezole sodium

41136-22-5

Ceftezole

26973-24-0
SALES SPECIFICATION (USP, BP)

APPEARANCE

white crystalline powder

CONTENT

99.0 - 101.0% (On dry basis)

WATER

4.0 - 4.5%

ABSORBANCE 262 nm: 220 - 245, 330 nm: < 0.05

7-ADCA

0.5% max

TRANSPORTATION
PACKING
 
HAZARD CLASS  
UN NO.  
OTHER INFORMATION
SHELF-LIFE: 5 years
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