Letrozole

Letrozole
Letrozole

Letrozole

Min.Order / FOB Price:Get Latest Price

100 Gram

Negotiable

  • Min.Order :100 Gram
  • Purity: 98%
  • Payment Terms : L/C,T/T,

Keywords

Letrozole 4,4'-(1H-1,2,4-TRIAZOL-1-YLMETHYLENE) BIS-BENZONITRILE FEMARA

Quick Details

  • Appearance:White to yellowish, crystalline powder
  • Application:API
  • PackAge:1kg/bag;5kg/tin;25kg/drum
  • ProductionCapacity:10|Metric Ton|Month
  • Storage:
  • Transportation:

Superiority:

Items

Specification

Appearance

White to yellowish, crystalline powder

Identification

A.IR spectrum of sample should be identical to that of Reference Standard;

The retention time of major peak in the chromatogram of the Assay preparation should correspond to that in the chromatogram of Standard preparation, as obtained in the Assay.

Showing the white precipitate reaction.

Water

Not more than 0.3%

Residue on Ignition

Not more than 0.1%

Heavy Metals

Not more than 0.001%

 

Related Compounds

Compound A: Not more than 0.1%

4,4’,4”-methylidenetrisbenzonitrile: Not more than 0.2%

Any other impurity: Not more than 0.1%

All other impurities: Not more than 0.3%

Residual Sovents

Ethanol: Not more than 3000ppm

Ethyl acetate: Not more than 2000ppm

DMF: Not more than 880ppm

Microbe Limit

Bacteria: Not more than 200/g

Mold and yeast: Not more than 50/g

Escherichia coli: should be absent

Assay(anhydrous)

98.0% to 102.0% of Cl7H11N5 on dried basis

Packaging and Storage

Preserve in tight containers at controlled room temperature.

Conclusion

Conforms to the USP32.

 

Details:

1. Clobetasone butyrate (25122-57-0) is good for the treatment of congenital atopic dermatitis, face, neck, axilla, perineal eczema and other diseases.
2.Apply to affected area with ointment, 1, 1 ~ 3 times.
3. Clobetasone butyrate (25122-57-0) can cause local irritation, itching, acne, miliaria, white ringworm, etc. should be promptly disabled. 2. Large or long-term large-scale applications, there may be glucocorticoid side effects.

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