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137331-57-8

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137331-57-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137331-57-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,3,3 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 137331-57:
(8*1)+(7*3)+(6*7)+(5*3)+(4*3)+(3*1)+(2*5)+(1*7)=118
118 % 10 = 8
So 137331-57-8 is a valid CAS Registry Number.

137331-57-8Downstream Products

137331-57-8Relevant articles and documents

BF3-induced rearrangement of aziridino cyclopropanes derived from 2-phenylsulfonyl 1,3-dienes. Application to the total synthesis of (±)-ferruginine

Jonsson,Loefstroem,Baeckvall

, p. 8454 - 8457 (2007/10/03)

Total synthesis of the alkaloid (±)-ferruginine (1) has been developed via the 2-phenylsulfonyl 1,3-diene approach. BF3-induced rearrangement of the N-protected cyclohexane aziridino cyclopropane 8, derived from its corresponding epoxy cyclopropane, afforded the desired tropane alkaloid skeleton 9 in good yield. Michael addition of nitroethane (as an acyl anion equivalent) and transformation of the nitro group of the adduct 10 to a keto function gave 11. Elimination of benzenesulfinic acid and subsequent replacement of the tosyl group by a methyl group afforded the title compound 1.

Azabicyclo and azacyclo oxime and amine cholinergic agents and methods of treatment

-

, (2008/06/13)

Pharmaceutically useful nitrogen containing cyclic oxime and amine substituted compounds which are azabicyclo[2.2.1]oximes, azabicyclo[2.2.2]oximes, azabicyclo[2.2.1]amines, azabicyclo[2.2.2]amines, azabicyclo[3.2.1]oximes, and amine containing heterocyclic oximes wherein the heterocyclic ring contains from 3 to 7 carbon atoms are disclosed.

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