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109572-55-6

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109572-55-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109572-55-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,5,7 and 2 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 109572-55:
(8*1)+(7*0)+(6*9)+(5*5)+(4*7)+(3*2)+(2*5)+(1*5)=136
136 % 10 = 6
So 109572-55-6 is a valid CAS Registry Number.

109572-55-6Downstream Products

109572-55-6Relevant articles and documents

ALDOL REACTION OF ALLENOLATES GENERATED VIA 1,4-ADDITION OF IODIDE ANION OR ITS EQUIVALENT TO α,β-ACETYLENIC KETONES

Taniguchi, Mikio,Hino, Tohru,Kishi, Yoshito

, p. 4767 - 4770 (2007/10/02)

TMSI, Et2AlI, and (n-Bu)4NI/TiCl4 smoothly added to α,β-acetylenic ketones in a 1,4-fashion to yield allenolates 2, which reacted with aldehydes providing aldol adducts in good overall yield.A high Z-stereoselectivity was achieved by use of (n-Bu)4NI/TiCl4 at -78 deg C, while a high E-stereoselectivity occured at 0 deg C.

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