2016年10月18日星期二

Finasteride


Finasteride, sold under the brand names Proscar and Propecia among others, is a medication used for the treatment of benign prostatic hyperplasia (BPH) and male pattern baldness (MPB). It is a type II and type III 5α-reductase inhibitor; 5α-reductase, an enzyme, converts testosterone to dihydrotestosterone (DHT).
Medical uses

Benign prostatic hyperplasia
Physicians use finasteride for the treatment of BPH, informally known as an enlarged prostate. Finasteride may improve the symptoms associated with BPH such as difficulty urinating, getting up during the night to urinate, hesitation at the start of urination, and decreased urinary flow. It provides less symptomatic relief than alpha-1 blockers such as tamsulosin and symptomatic relief is slower in onset (six months or more of treatment with finasteride may be required to determine the therapeutic results of treatment). Symptomatic benefits are mainly seen in those with prostate volume > 40 cm3. In long-term studies finasteride but not alpha-1 inhibitors reduce the risk of acute urinary retention (−57% at 4 years) and the need for surgery (−54% at 4 years). If the drug is discontinued, any therapeutic benefits reverse within about 6–8 months.

Male pattern baldness

Finasteride is used to treat male pattern hair loss (androgenetic alopecia) in men only. Treatment slows further hair loss and provides about 30% improvement in hair loss after six months of treatment, with effectiveness only persisting as long as the drug is taken.

Off-label uses

Finasteride is sometimes used in hormone replacement therapy for transgender women in combination with a form of estrogen due to its antiandrogen properties. However, little clinical research of finasteride use for this purpose has been conducted and evidence of efficacy is limited.

Basic information:
Product Name: Finasteride, proscar, propecia
CAS  No: 98319-26-7
Molecular Formula: C23H36N2O2
Molecular Weight; 372.55
Standard: GMP /USP34/EP7
Usage of Finasteride :1) Use for treatment of hair loss
 2) For the treatment of benign prostatic hyperplasia, enlarged prostate shrink, improve urinary flow and improvementof benign prostatic hyperplasia caused symptoms.
Certificate of analysis for Finasteride:
TEST SPECIFICATIONSRESULTS
AppearanceWhite or almost white crystalline powder. Melts at about 257°CComplies
Assay (HPLC, based on drying) 
98.5% ~ 101.0% calculated on
anhydrous basis
99.55%
Identification 
Infrared
Absorption
Retention
time
Corresponds to spectrum of
USP Finasteride RS
Retention time of major peak
of Assay preparation
corresponds to USP Finasteride
RS preparation

Corresponds to spectrum of USP Finasteride RS
Retention time of major
peak of Assay preparation
corresponds to USP
Finasteride RS preparation
Specific rotation-56.0°~ -60.0°-57.5°
Melting PointMelts at about 257°complies
Solubility
Free soluble in Chloroform and
in alcohol,very slightly soluble
in water
Complies
Water (Method I)≤0.3%0.16%
Residue on ignition≤0.1%0.07%
Heavy metals (Method II)≤10 ppmComplies
Chromatographic puritySingle largest impurity: ≤0.5%0.09%

Total impurities: ≤1.0%0.28%
Particle size100% < 30 micronComplies

90% < 25 micronComplies
ConclusionThe test product complies with the requirements of USP32.
Packaging & Shipping:

Packaging Detail: 1. 10,50g,100g,500g,1kg in aluminum foil bags & 25kg/barrel.
                          2. The packaging can be on request
Delivery Detail:  5-7days for regular shipping
                         7-15days if shipping get delayed

my contact infomation is:

Email: cloris_2016@tuskwei.com or

bettytuskwei@yahoo.com

Skype: betty_3451

Website: http://www.tuskwei.net/

Notice: This product is only suitable for laboratory use, or the use of animals. It can not be used directly on the human body

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