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214333-70-7

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214333-70-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 214333-70-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,4,3,3 and 3 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 214333-70:
(8*2)+(7*1)+(6*4)+(5*3)+(4*3)+(3*3)+(2*7)+(1*0)=97
97 % 10 = 7
So 214333-70-7 is a valid CAS Registry Number.

214333-70-7Relevant articles and documents

Study of metal and acid catalysed deprotection of propargyl ethers of alcohols via their allenyl ethers

Mereyala, Hari Babu,Gurrala, Srinivas Reddy,Mohan, S. Krishna

, p. 11331 - 11342 (2007/10/03)

A new method for the deprotection of prop-2-ynyl ethers 1b-9b is described. Isomerisation of 1b-9b to O-allenyl ethers 1d-9d and deprotection by reaction with Hg(OCOCF3)2, aq.HCl, aq.CF3CO2H and best by use of a catalytic amount of OsO4 is described to obtain the alcohols 1a-9a in good yield. Application of this method for the deprotection of prop-2-enyl ethers 7c,8c,10c-13c via their corresponding prop-1-enyl ethers 7e,8e,10e-13e to obtain the corresponding alcohols 7a,8a,10a-13a is also described.

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