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734-32-7

734-32-7

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734-32-7 Usage

Chemical Properties

Off-White Solid

Uses

Norethindrone intermediate

Flammability and Explosibility

Notclassified

Check Digit Verification of cas no

The CAS Registry Mumber 734-32-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,3 and 4 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 734-32:
(5*7)+(4*3)+(3*4)+(2*3)+(1*2)=67
67 % 10 = 7
So 734-32-7 is a valid CAS Registry Number.
InChI:InChI=1/C18H24O2/c1-18-9-8-14-13-5-3-12(19)10-11(13)2-4-15(14)16(18)6-7-17(18)20/h10,13-16H,2-9H2,1H3/t13?,14?,15?,16?,18-/m0/s1

734-32-7SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 11, 2017

Revision Date: Aug 11, 2017

1.Identification

1.1 GHS Product identifier

Product name Norandrostenedione

1.2 Other means of identification

Product number -
Other names 19-nor-4-androstenedione

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:734-32-7 SDS

734-32-7Synthetic route

19-nortestosterone
434-22-0

19-nortestosterone

estra-4-ene-3,17-dione
734-32-7

estra-4-ene-3,17-dione

Conditions
ConditionsYield
In acetic acid for 1h; Ambient temperature;96%
With tert.-butylhydroperoxide; 3 A molecular sieve; zircornium(IV) n-propoxide In dichloromethane for 17h;96%
With zirconium(IV) tert-butoxide; chloral In dichloromethane at 20℃; for 8h;73%

734-32-7Relevant articles and documents

Jacquesy et al.

, p. 4739 (1972)

Method for preparing 19-desmethyl-4-androstene-3,17-diketone by using one-pot method

-

Paragraph 0019, (2018/04/03)

The invention discloses a method for preparing 19-desmethyl-4-androstene-3,17-diketone by using a one-pot method. The method for preparing 19-desmethyl-4-androstene-3,17-diketone comprises the step oftaking a compound 1 as a starting raw material, carrying out hydrogenation and condensation reaction by using the one-pot method, thus obtaining a 19-desmethyl-4-androstene-3,17-diketone coarse product 3, wherein reaction formulas are as follows: as shown in the specification. According to the method, the high-purity 19-desmethyl-4-androstene-3,17-diketone coarse product can be obtained under a total mole yield of 92 percent or above, so that the method is low in cost, environmentally friendly and suitable for industrial production.

Method for preparing 19-nor-4-androstene-3,17-dione

-

, (2017/08/28)

The invention discloses a method for preparing 19-nor-4-androstene-3,17-dione. The method comprises the following steps: taking a compound 1 as an initial raw material, carrying out a hydrolysis reaction, a hydrogenation reaction and condensation reaction so as to obtain 19-nor-4-androstene-3,17-dione, wherein the reaction formula is as shown in the specification. According to the method disclosed by the invention, a high-purity 19-nor-4-androstene-3,17-dione product is obtained at the total molar yield of 83% or higher, and the method is low in cost, green, environmental-friendly and suitable for industrial production.

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