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5β-Pregn-20-yne is a steroidal compound characterized by its unique structure, featuring a carbon-carbon triple bond at the 20th position and a 5β-configuration. This molecule is derived from the pregnane family, which is a class of steroidal compounds that are precursors to various hormones, including progesterone and other corticosteroids. The 5β-Pregn-20-yne structure is of interest in chemical and pharmaceutical research due to its potential applications in the synthesis of bioactive molecules and its role in understanding the structure-activity relationships of steroidal compounds. Its unique properties may also make it a candidate for further exploration in the development of new drugs and therapeutic agents.

5717-05-5

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5717-05-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5717-05-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,7,1 and 7 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 5717-05:
(6*5)+(5*7)+(4*1)+(3*7)+(2*0)+(1*5)=95
95 % 10 = 5
So 5717-05-5 is a valid CAS Registry Number.

5717-05-5Upstream product

5717-05-5Downstream Products

5717-05-5Relevant academic research and scientific papers

PREPARATION AND ABSOLUTE CONFIGURATION AT C(22) OF 21,26,27-TRINOR-5α-CHOLESTANE-22,25-DIOL DERIVATIVES

Pouzar, Vladimir,Vasickova, Sona,Drasar, Pavel,Cerny, Ivan,Havel, Miroslav

, p. 2423 - 2436 (2007/10/02)

Reaction of 5α-pregnan-21-al (V), obtained from ester of the corresponding acid III via the alcohol IV, with lithium salt of 1-methoxymethoxy-2-propyne afforded both the isomeric 25-methoxymethoxy-21,26,27-trinor-5α-cholest-23-yn-22-ols (VI and VII) which

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