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74143-92-3

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74143-92-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74143-92-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,1,4 and 3 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 74143-92:
(7*7)+(6*4)+(5*1)+(4*4)+(3*3)+(2*9)+(1*2)=123
123 % 10 = 3
So 74143-92-3 is a valid CAS Registry Number.

74143-92-3Relevant articles and documents

Preparation of β-Hydroxy-α-phenylthio Esters via Condensation of Aldehydes with α-Phenylthio Ester Enolate Anions

Hoye, Thomas R.,Kurth, Mark J.

, p. 3549 - 3554 (2007/10/02)

The lithium enolates of α-phenylthio esters 5 react with aldehydes 6 to give good yields of diastereomeric aldol products 7 and 8 provided that anhydrous zinc chloride is first added to the enolate solution.The threo or erythro nature of several of the al

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