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Methyl Dienedione(Estra-4, 9-Diene-3, 17-Dione) Cas5173-46-6

Methyl Dienedione(Estra-4, 9-Diene-3, 17-Dione) Cas5173-46-6

Product Name: Methyl Dienedione(Estra-4,9-diene-3,17-dione)
CAS :5173-46-6
Molecular Weight:280.36
Density:1.16 g/cm3
Boiling Point:466.5 °C at 760 mmHg
Flash Point:173.4 °C
Appearance:white or almost white crystalline powder
Assay: 99%

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Product Details

Product Details

NameEstra-4, 9-Diene-3, 17-Dione
Other nameMethyl Dienedione(Estra-4,9-diene-3,17-dione)
Boiling Point466.5 °C at 760 mmHg
Density1.16 g/cm3
Appearancewhite or almost white crystalline powder
Min order quantity10grams.
Quality standardEnterprise Standard
PackingAs your require
StorageKeep it under seal in cool and dark place
CertificationGMP, ISO 9001, USP, BP
GradePharmaceutical Grade
PackageIn foil bag or drum
AppearanceWhite Or Almost White Crystalline Powder
UsagePharmaceutical material, Steroid hormone, Anabolin. As a male hormone and anabolic hormones.



1.Where to buy wholesale Methyl Dienedione(Estra-4, 9-Diene-3, 17-Dione) Cas5173-46-6?

A:Hongkong Rongxin Bio-Tech is the most professinal API supplier,we would give you the best quality and wholsale methyltestosterone powders.

2.Do you have Methyltestosterone powder in stock?Or need to waiting for the production?

A:We are the manufacture,we have enough stock.The parcel will be shipped out within 24 hours after your payment confirmed.

3.Your methyltestosterone for sale purity is how much?

A:Because we are the Methyltestosterone factory,we would supply high quality methyltestosterone.the purity is more than 99.5%.


Methyl Dienedione(Estra-4, 9-Diene-3, 17-Dione) Cas5173-46-6 is a kind of preparation method of mifepristone intermediate.

Making Method including the following steps: the 19-hydroxy-4-androstenedione (I)

In contact with lead tetraacetate in an organic solvent, its 19-position hydroxyl group will be

Degradation esterification is performed, and the corresponding degraded ester is collected from the reaction liquid

Compound (II); the degraded ester compound (II) and p-toluenesulfonic acid

Contact reaction in organic solvent, collect the target product from the reaction solution

The substance estrogen 4,9-diene-3,17-dione (III). Female of the present invention

The preparation method of steroid Methyl Dienedione(Estra-4, 9-Diene-3, 17-Dione) Cas5173-46-6 has a synthetic route Short line, high yield.

1. A method for preparing a mifepristone intermediate, wherein the mifepristone intermediate is estrogen 4,9-di

Ene-3,17-dione (III), characterized in that, the method includes the following steps:

(A). Dissolve 19-hydroxy-4-androstenedione (I) in an organic solvent, then add tetraacetate, and

Until the reaction is complete and the degradation ester (II) is obtained, wherein the 19-hydroxy-4-androstenedione, organic solvent, tetraacetic acid

The weight to volume ratio of salt is 1: (5 ~ 20): (0.1 ~ 10) (w/v/w);

(B) Dissolve the degraded ester compound (II) in an organic solvent, reflux for dehydration, then add a weak organic acid, and reflux until the reaction is complete

To obtain estrogen 4,9-diene-3,17-dione (III), wherein the degradation ester (II), organic solvent, organic weak.

The weight-to-volume ratio of acid is 1: (5 ~ 20): (0.1 ~ 5) (w/v/w)

2,wherein the tetraacetic acid salt in the step (a) is tetraacetic acid lead.

3,wherein the weak organic acid in the step (b) is p-toluenesulfonate acid.

4. wherein the organic solvent is selected from toluene& benzene&cyclohexane

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