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135761-28-3

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135761-28-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 135761-28-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,7,6 and 1 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 135761-28:
(8*1)+(7*3)+(6*5)+(5*7)+(4*6)+(3*1)+(2*2)+(1*8)=133
133 % 10 = 3
So 135761-28-3 is a valid CAS Registry Number.

135761-28-3Relevant articles and documents

Asymmetric pinacol coupling of aromatic aldehydes catalyzed by a new titanium-Schiff base complex

Li, You-Gui,Tian, Qing-Shan,Zhao, Jun,Feng, Yan,Li, Min-Jie,You, Tian-Pa

, p. 1707 - 1710 (2004)

A new Schiff-base with two stereogenic centers has been prepared and its titanium complex applied to catalyze the pinacol coupling of aldehydes, which afforded pinacols in high yield, excellent diastereoselectivities, and high enantioselectivities.

Synthesis of New Optically Active Crown Ethers

Dehmlow, Eckehard V.,Knufinke, Volker

, p. 1091 - 1094 (2007/10/02)

Optically active crown ethers 1a-11, 2, 3a,b, 4a,b, 5a,b and the analogue 6 are synthesized.The efficiency of these compounds as phase-transfer catalysts for a series of enantioselective reactions will be tested.This will be described in a following publication. Key Words: Crown ethers, chiral, optically active / Phase transfer catalysts

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