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111254-24-1

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111254-24-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 111254-24-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,2,5 and 4 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 111254-24:
(8*1)+(7*1)+(6*1)+(5*2)+(4*5)+(3*4)+(2*2)+(1*4)=71
71 % 10 = 1
So 111254-24-1 is a valid CAS Registry Number.

111254-24-1Relevant articles and documents

Synthesis and Configuration of Natural Dracaenones

Li, Mei-Mei,Wu, Yikang,Liu, Bo

, p. 575 - 578 (2019/01/24)

Several dracaenones were synthesized in enantiopure forms for the first time. The key chiral center at C-7 was installed with well-defined stereochemistry using either an Evans aldol condensation or a chiral oxidant-mediated asymmetric epoxidation, while

A concise synthetic approach to brazilin via Pd-catalyzed allylic arylation

Jung, Youngeun,Kim, Ikyon

, p. 4331 - 4335 (2015/04/14)

A short synthetic route to the trimethyl ether of brazilin was developed in 6 steps from 7-methoxychromene with 78% overall yield. Regioselective installation of a formyl group onto 7-methoxychromene followed by reduction and acetylation afforded allylic acetate. Palladium-catalyzed allylic coupling of allylic acetate with arylboronic acid provided direct access to 3-benzylchromene which was converted to the target molecule upon ensuing dihydroxylation and acid-catalyzed cyclization in a highly concise manner. This journal is

Homoisoflavonoids and related compounds. II. Isolation and absolute configurations of 3,4-dihydroxylated homoisoflavans and brazilins from Caesalpinia sappan L.

Namikoshi,Nakata,Yamada,et al.

, p. 2761 - 2773 (2007/10/02)

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