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74965-55-2

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74965-55-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74965-55-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,9,6 and 5 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 74965-55:
(7*7)+(6*4)+(5*9)+(4*6)+(3*5)+(2*5)+(1*5)=172
172 % 10 = 2
So 74965-55-2 is a valid CAS Registry Number.

74965-55-2Downstream Products

74965-55-2Relevant articles and documents

Preparation of Cyclohexanones and Cyclopentanones of High Optical Purity

Taber, Douglass F.,Saleh, Samir A.,Korsmeyer, Richard W.

, p. 4699 - 4702 (2007/10/02)

Cyclization of 3, prepared from 1-menthol, led to a 1:1 mixture of 4 and 5.These diastereomeric ketones, readily separated by chromatography, are versatile intermediates for the preparation of alkylated cyclohexanones.The absolute configuration of 5 was assigned by conversion to the known hydroxy ketal 9.This approach works equally well for the cyclopentane series.Thus, alkylated cyclohexanones and cyclopentanones of known absolute configuration will for the first time be routinely available.

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