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185758-21-8

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185758-21-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 185758-21-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,5,7,5 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 185758-21:
(8*1)+(7*8)+(6*5)+(5*7)+(4*5)+(3*8)+(2*2)+(1*1)=178
178 % 10 = 8
So 185758-21-8 is a valid CAS Registry Number.

185758-21-8Relevant articles and documents

Synthesis of fluorous azodicarboxylates: Towards cleaner Mitsunobu reactions

Dobbs, Adrian P,McGregor-Johnson, Caroline

, p. 2807 - 2810 (2002)

The synthesis of a fluorous analogue of diethyl azodicarboxylate (DEAD) is described and preliminary results for its use in the Mitsunobu reaction given. Use of fluorous extraction methods have shown that chromatography is not necessary for reaction purif

Chiral oximes in asymmetric synthesis. Part 2. Addition of butyllithium to benzaldehyde O-(1-phenylalkyl)oximes

Galagher, Peter T.,Hunt, James C. A.,Lightfoot, Andrew P.,Moody, Christopher J.

, p. 2633 - 2637 (2007/10/03)

A series of benzaldoxlme ethers PhCH=NOCHRPh 5 bearing a chiral auxiliary on oxygen have been prepared to investigate the effect of the auxiliary on the diastereoselectivity of the addition of butyllithium to the oxime C=N bond. By increasing the size of the alkyl group R in the auxiliary, OCHRPh, an increase in de is observed, with the best compromise between ready availability and high levels of asymmetric induction in the product 6 being achieved with the oximes derived from O-(1-phenylbutyl)hydroxylamine.

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