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175907-64-9

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175907-64-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 175907-64-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,5,9,0 and 7 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 175907-64:
(8*1)+(7*7)+(6*5)+(5*9)+(4*0)+(3*7)+(2*6)+(1*4)=169
169 % 10 = 9
So 175907-64-9 is a valid CAS Registry Number.

175907-64-9Relevant articles and documents

Heterocyclic Spirocyclohexadienones from Substituted Phenols

Moehrle, H.,Schake, D.

, p. 1859 - 1868 (2007/10/03)

Mannich bases were prepared from substituted phenols with aliphatic amines and formaldehyde.Amine exchange with N-methyl-2-naphthylamine followed by a Hofmann Martius rearrangement gave rise to o,o'-amino-hydroxy-diphenylmethane derivatives.Under cyclization conditions some of these compounds produced spirocyclohexadienones, which are the ipso analogs to the hypothetic intermediates postulated in the aminomethylation mechanism of phenols. - Keywords: Mannich Reaction; Phenol Dienone Tautomerism; Hofmann Martius Rearrangement

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