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167170-50-5

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167170-50-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 167170-50-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,7,1,7 and 0 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 167170-50:
(8*1)+(7*6)+(6*7)+(5*1)+(4*7)+(3*0)+(2*5)+(1*0)=135
135 % 10 = 5
So 167170-50-5 is a valid CAS Registry Number.

167170-50-5Relevant articles and documents

Lithium 2-(2-lithiomethylphenyl)ethanolate from isochroman: Easy preparation of substituted benzoxepines and functionalised arenes

Almena, Juan,Foubelo, Francisco,Yus, Miguel

, p. 3365 - 3374 (1995)

The reaction of isochroman (1) with an excess of lithium powder and a catalytic amount of DTBB (2.5 mol %) in THF at 20°C yields the title intermediate, which by reaction with different electrophiles (H2O, D2O, CO2 and carbonyl compounds) at temperatures ranging between -78 and 20°C yields, after hydrolysis, the corresponding products 3. Diols 3h-m, derived from benzaldehyde or ketones, give upon treatment with 85% phosphoric acid the corresponding benzoxepines 5h-m. In the other cases, Friedel-Crafts products resulting from a rearrangement of the first carbenium ion formed, are obtained.

Functionalised organotitanium compounds: From lithium to titanium intermediates in chemoselective reactions with carbonyl compounds

Pastor, Isidro M,Yus, Miguel

, p. 2365 - 2370 (2007/10/03)

The reaction of functionalised organolithium compounds 1 with an equimolecular mixture of two carbonyl compounds in the presence of 2 equiv. of triisopropoxytitanium chloride can discriminate between aldehyde and ketone, the process being selective for al

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