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66557-23-1

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66557-23-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66557-23-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,5,5 and 7 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 66557-23:
(7*6)+(6*6)+(5*5)+(4*5)+(3*7)+(2*2)+(1*3)=151
151 % 10 = 1
So 66557-23-1 is a valid CAS Registry Number.

66557-23-1Downstream Products

66557-23-1Relevant articles and documents

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Sakurai,H. et al.

, p. 4045 - 4048 (1977)

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REACTION OF HOMOALLYLIC COMPOUNDS OF TIN WITH ACYLATING AGENTS

Ivashchenko, N. B.,Polunin, E. V.,Kashin, A. N.

, p. 546 - 550 (2007/10/02)

In the reaction of homoallylic organotin compounds with carboxylic acid anhydrides and chlorides in the presence of Lewis acids cyclopropyl methyl ketones are formed with α,β-unsaturated ketones and β-chloro ketones as impurities.The ratio of the reaction products depends on the temperature, the structure of the reagents, and the type of catalyst.

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