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799-43-9

799-43-9

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  • (8S,9S,13S,14S,17S)-13-ethyl-17-ethynyl-3-methoxy-4,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-17-ol

    Cas No: 799-43-9

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799-43-9 Usage

Uses

Different sources of media describe the Uses of 799-43-9 differently. You can refer to the following data:
1. An impurity from the synthesis of Levonorgestrel (N689510), an oral contraceptive.
2. 13-Ethyl-3-methoxy-18,19-dinorpregna-2,5(10)-dien-20-yn-17-ol is a steroid used in the synthesis of other steroid hormones.

Check Digit Verification of cas no

The CAS Registry Mumber 799-43-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,9 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 799-43:
(5*7)+(4*9)+(3*9)+(2*4)+(1*3)=109
109 % 10 = 9
So 799-43-9 is a valid CAS Registry Number.

799-43-9SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name 13-Ethyl-17-ethynyl-3-methoxy-4,6,7,8,9,11,12,13,14,15,16,17-dode cahydro-1H-cyclopenta[a]phenanthren-17-ol (non-preferred name)

1.2 Other means of identification

Product number -
Other names EP Levonorgestrel Impurity B

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:799-43-9 SDS

799-43-9Downstream Products

799-43-9Relevant articles and documents

Preparation method of levonorgestrel

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Paragraph 0025-0026; 0028-0029; 0031-0032, (2020/09/20)

The invention discloses a preparation method of levonorgestrel, and belongs to the technical field of medicine preparation and processing. According to the method, 18-methylestra-2,5(10)-diene-3-methoxy-17-ketone is used as an initial raw material, and the levonorgestrel disclosed by the invention is prepared by virtue of two steps of ethynylation and hydrolysis. According to the preparation method of the levonorgestrel, the defects of a traditional process are overcome and reaction conditions are mild; the method is high in overall conversion rate, easy and convenient to operate, suitable forindustrial production and wide in market prospect.

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