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1296645-36-7

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1296645-36-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1296645-36-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,9,6,6,4 and 5 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1296645-36:
(9*1)+(8*2)+(7*9)+(6*6)+(5*6)+(4*4)+(3*5)+(2*3)+(1*6)=197
197 % 10 = 7
So 1296645-36-7 is a valid CAS Registry Number.

1296645-36-7Upstream product

1296645-36-7Downstream Products

1296645-36-7Relevant articles and documents

The reaction of acetal-type protective groups in combination with TMSOTf and 2,2′-bipyridyl; Mild and chemoselective deprotection and direct conversion to other protective groups

Fujioka, Hiromichi,Minamitsuji, Yutaka,Kubo, Ozora,Senami, Kento,Maegawa, Tomohiro

experimental part, p. 2949 - 2960 (2011/05/12)

A mild and chemoselective deprotection method of various acetal-type protective groups, such as MOM, MEM, BOM, and SEM ethers, has been developed. The combination of TMSOTf and 2,2′-bipyridyl was very effective for the deprotection, and the reaction proceeded via the formation of pyridinium intermediates, which were hydrolyzed to the corresponding alcohols in good to high yields. The features of this method are mild (almost neutral) reaction conditions and the tolerability of acid-sensitive functional groups. This method is also applicable for the direct conversion of MOM ether to BOM or SEM ether using the appropriate alcohols instead of H2O.

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