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185805-21-4

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185805-21-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 185805-21-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,5,8,0 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 185805-21:
(8*1)+(7*8)+(6*5)+(5*8)+(4*0)+(3*5)+(2*2)+(1*1)=154
154 % 10 = 4
So 185805-21-4 is a valid CAS Registry Number.

185805-21-4Relevant articles and documents

Use of Silicon-Based Tethers to Control Diastereofacial Selectivity in Azomethine Ylide Cycloadditions

Garner, Philip,Cox, Philip B.,Anderson, James T.,Protasiewicz, John,Zaniewski, Rebecca

, p. 493 - 498 (1997)

A novel approach to controlling the diastereofacial selectivity of intramolecular dipolar cycloadditions of azomethine ylides (cf. 9 → 8) by varying the structure a silicon-based tether is described. A correlation is found between the length of the tether

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