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1252814-54-2

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1252814-54-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1252814-54-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,2,8,1 and 4 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1252814-54:
(9*1)+(8*2)+(7*5)+(6*2)+(5*8)+(4*1)+(3*4)+(2*5)+(1*4)=142
142 % 10 = 2
So 1252814-54-2 is a valid CAS Registry Number.

1252814-54-2Relevant articles and documents

Diastereoselective reductive ring expansion of spiroketal dihydropyranones to cis -fused bicyclic ethers

Zhu, Liangyu,Song, Liyan,Tong, Rongbiao

, p. 5892 - 5895 (2013/02/22)

A novel double cascade synthetic strategy was developed for the diastereoselective syntheses of cis-fused bicyclic ethers, featuring cascade Achmatowicz rearrangement/spiroketalization and cascade spiroketal reduction/oxa-Michael cyclization. Especially, the chemo-, regio-, and diastereoselective reduction of densely functionalized spiroketal dihydropyranones, followed by oxa-Michael cyclization in a one-pot fashion, was achieved.

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