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1132641-33-8

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1132641-33-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1132641-33-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,3,2,6,4 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1132641-33:
(9*1)+(8*1)+(7*3)+(6*2)+(5*6)+(4*4)+(3*1)+(2*3)+(1*3)=108
108 % 10 = 8
So 1132641-33-8 is a valid CAS Registry Number.

1132641-33-8Upstream product

1132641-33-8Downstream Products

1132641-33-8Relevant articles and documents

Enantioselective dearomative [3+2] cycloaddition of 2-nitrobenzofurans with aldehyde-derived Morita-Baylis-Hillman carbonates

Yang, Xin-He,Li, Jian-Ping,Wang, Dong-Chao,Xie, Ming-Sheng,Qu, Gui-Rong,Guo, Hai-Ming

supporting information, p. 9144 - 9147 (2019/08/07)

The phosphine-catalyzed asymmetric dearomative [3+2] cycloaddition of 2-nitrobenzofurans with aldehyde-derived Morita-Baylis-Hillman (MBH) carbonates or allenoate was developed. The reaction with MBH carbonates resulted in a series of cyclopentabenzofurans containing three contiguous stereocenters with good to high yields, diastereoselectivities and enantioselectivities. The use of allenoate also gave the target product with moderate enantioselectivity.

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