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Acetic acid (4aR,4bS,6aS,11aS,11bR)-4a,6a-dimethyl-8-phenyl-1,2,3,4,4a,4b,5,6,6a,6b,10,10a,11,11a,11b,12-hexadecahydro-7-oxa-9-aza-indeno[2,1-a]phenanthren-2-yl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

77873-52-0

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77873-52-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77873-52-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,8,7 and 3 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 77873-52:
(7*7)+(6*7)+(5*8)+(4*7)+(3*3)+(2*5)+(1*2)=180
180 % 10 = 0
So 77873-52-0 is a valid CAS Registry Number.

77873-52-0Downstream Products

77873-52-0Relevant academic research and scientific papers

RITTER-REACTION OF STEROIDS RING EXPANSION OF STEROID OXETHANS INTO DIHYDROOXAZINES

Schneider, Gyula,Hackler, Laszlo,Sohar, Pal

, p. 3377 - 3386 (2007/10/02)

The 3β-acetoxy-16β,17β-epoxymethyleneandrost-5-ene (1) transforms into the dihydrooxazine condensed to the sterane skeleton (4a,b,c,e,g,i) in a ring expansion reaction with alkyl and aryl nitriles in presence of HBF4 - diethyletherate.The 3β-acetoxy-16α,1

RING EXPANSION OF STEROID OXETHANS INTO DIHYDROOXAZINES

Schneider, Gyula,Hackler, Laszlo,Sohar, Pal

, p. 341 - 344 (2007/10/02)

In the case of oxethans condensed in an appropriate steric position to the sterane skeleton, the formation of six-membered dihydrooxazines has been observed with aliphatic or aromatic acid nitriles in the presence of Lewis acids, involving thus ring expansion.

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