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1241388-95-3

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1241388-95-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1241388-95-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,1,3,8 and 8 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1241388-95:
(9*1)+(8*2)+(7*4)+(6*1)+(5*3)+(4*8)+(3*8)+(2*9)+(1*5)=153
153 % 10 = 3
So 1241388-95-3 is a valid CAS Registry Number.

1241388-95-3Downstream Products

1241388-95-3Relevant articles and documents

Asymmetric vinylogous Michael reaction of α,β-unsaturated ketones with γ-butenolide under multifunctional catalysis

Huang, Huicai,Yu, Feng,Jin, Zhichao,Li, Wenjun,Wu, Wenbin,Liang, Xinmiao,Ye, Jinxing

supporting information; experimental part, p. 5957 - 5959 (2010/11/04)

A general and direct organocatalytic asymmetric vinylogous Michael reaction of γ-butenolide with α,β-unsaturated ketones was investigated with a multifunctional primary amine salt as catalyst. The reaction enables straightforward access toward synthetically versatile γ-substituted butenolides from simple 2(5H)-furanone with satisfactory yields, diastereo- and enantioselectivities (up to 30:1 dr and 95-99% ee).

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