Stilbestrol Diethylstilbestrol CAS 56-53-1
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Diethylstilbestrol
Alias:stilbestrol
Synonyms: DES;3,4-Bis(4-hydroxyphenyl)-3-hexene
CAS : 56-53-1;6898-97-1
Assay: 99%
Molecular Formula:C18H20O2
Molecular Weight:268.35
Packing:1kg/tin
Usage: Mainly used for low disease and estrogen hormone imbalance caused by functional bleeding, amenorrhea, can also be used before induction of labor stillbirth to increase myometrial oxytocin sensitivity
Description
Diethylstilbestrol (DES, former BAN stilboestrol) is a synthetic nonsteroidal estrogen that was first synthesized in 1938. It is also classified as an endocrine disruptor. Human exposure to DES occurred through diverse sources, such as dietary ingestion from supplemented cattle feed and medical treatment for certain conditions, including breast and prostate cancers.
From about 1940 to 1971, DES was given to pregnant women in the mistaken belief it would reduce the risk of pregnancy complications and losses.
In 1971, DES was shown to cause a rare vaginal tumor in girls and women who had been exposed to this drug in utero. The United States Food and Drug Administration subsequently withdrew DES from use in pregnant women. Follow-up studies have indicated that DES also has the potential to cause a variety of significant adverse medical complications during the lifetimes of those exposed.
The United States National Cancer Institute recommends women born to mothers who took DES undergo special medical exams on a regular basis to screen for complications as a result of the drug. Individuals who were exposed to DES during their mothers' pregnancies are commonly referred to as "DES daughters" and "DES sons".
Application
A synthetic, nonsteroidal estrogen. Recomended solvents are DMSO, DMF and ethanol, even in these solvents do not store in solution for any prolonged period of time.
Specification
| Test Items | Specification | Test Results |
| Properties | A white or almost crystal powders | Almost white crystal powders |
| Identification | Positive | Complies |
| Acid Basicity | Neutrality is reacted | Complies |
| Content | ≥98% | 99.29% |
| Melting point | 169~172ºC | 170~172ºC |
| Related substance | ≤0.5% | Complies |
| Loss on drying | ≤0.5% | 0.2% |
| Organic volatile impurities | Complies | Complies |
| Sulphated ash | ≤0.1% | 0.02% |
Our advantages:
1, High quality with competitive price:
1)Standard: Enterprise Standard
2)All Purity≥99%
3)We are manufacturer and can provide high quality products with factory price.
2, Fast and safe delivery
1)Parcel can be sent out in 24 hours after payment. Tracking number available.
2)Secure and discreet shipment. Various transportation methods for your choice.
3)Customs pass rate ≥99%
4) We have our own agent/remailer/distributor who can help us ship our products very fast and safe, and we have stock in there for transferring.
3, We have clients throughout the world.
1)Professional service and rich experience make customers feel at ease, adequate stock and fast delivery meet their desire.
2)Market feedback and goods feedback will be appreciated, meeting customers's requirement is our responsibility.
3) High quality, competitive price, fast delivery, first-class service gain the trust and praise from the customers.
Q1: Have your Product Quality been Approved by Third Party Lab?
A: Yes, All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France etc. So you will be assured with Good Quality if you choose us.
Q2:How do you treat quality complaint?
A:First of all, our QC department will do strict examination of our export products by HPLC, UV, GC , TLC and so on in order to reduce the quality problem to near zero. If there is a real quality problem , caused by us, we will send you free goods for replacement or refund your loss.
Q3: Do you Accept Sample Order?
A: Yes, we accept small order from 10g, 100g and 1kg for your evaluation quality of our goods.
Q4: Is there any discount?
A: Yes, for larger quantity, we always support with better price.
Q5:Do you accept VISA business credit card ?
A:Sorry we don't accept VISA credit card,
We'd like to accept bank transfer, Western Union or Paypal or Moneygram
Q6:How long does it take to the goods arrived ?
A:It is Depending on your location,
For small order, please expect 5-7 days by DHL,UPS,TNT, FEDEX, EMS.
For mass order, please allow 5-8 days by Air, 20-35 days by Sea.
Q7. Do you have any reshipment policy ?
we have good after-sale service and re-shipment policy if the parcel lose
Our long association with our clients has brought great benefits
We always take the upmost care in the packaging of our products
our clients will confirm this as even they struggle to find them without help at times.
But in spite of our best efforts it is still possible will seize a small number of packages.
In this circumstance we promise reship free to establish long term relationship
Q8 :Can I get a sample?
A: Of course. For most products we can provide you a free sample, while the shipping cost should
undertake by your side.
