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497063-93-1

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497063-93-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 497063-93-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,9,7,0,6 and 3 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 497063-93:
(8*4)+(7*9)+(6*7)+(5*0)+(4*6)+(3*3)+(2*9)+(1*3)=191
191 % 10 = 1
So 497063-93-1 is a valid CAS Registry Number.

497063-93-1Downstream Products

497063-93-1Relevant articles and documents

Improved synthesis of 13C,2H3- and 2H3-salmeterol by Cs2CO3-mediated monoalkylation of a primary amine

Molinski, Tadeusz F.,Stanley, Scott D.

, p. 755 - 762 (2007/10/03)

An abbreviated synthesis of isotopically labelled salmeterol has been achieved. The key improvement utilizes a highly selective Cs2CO3-mediated one-pot alkylation of benzylamine by 6-bromo-1-(4′-phenylbutoxy)hexane to prepare the limiting reagent, 6-N-benzylamino-1-(4′-phenylbutoxy)hexane without overalkylation. The method was applied to synthesis of the title compounds in >97 at% isotopic purity. Copyright

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