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stemar-13-ene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

138883-56-4

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138883-56-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138883-56-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,8,8 and 3 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 138883-56:
(8*1)+(7*3)+(6*8)+(5*8)+(4*8)+(3*3)+(2*5)+(1*6)=174
174 % 10 = 4
So 138883-56-4 is a valid CAS Registry Number.

138883-56-4Downstream Products

138883-56-4Relevant academic research and scientific papers

Diastereoselective total synthesis of (+)-13-stemarene by fourth generation methods: A formal total synthesis of (+)-18-deoxystemarin

Leonelli, Francesca,Blesi, Federico,Dirito, Paolo,Trombetta, Andrea,Ceccacci, Francesca,La Bella, Angela,Migneco, Luisa M.,Marini Bettolo, Rinaldo

, p. 6871 - 6876 (2011)

The problem of constructing diastereoselectively the C/D ring system of stemarane diterpenes from a bicyclo[2.2.2]octane intermediate was solved resulting in very simple synthesis of (+)-13-stemarene 1. The obtaining of the latter represents also a formal synthesis of (+)-18-deoxystemarin 2. In the key step, the epimeric mixture 10, dissolved in toluene, was converted by the action of TsOH into (+)-stemar-13-en-15-one 28.

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