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1172142-67-4

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1172142-67-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1172142-67-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,2,1,4 and 2 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1172142-67:
(9*1)+(8*1)+(7*7)+(6*2)+(5*1)+(4*4)+(3*2)+(2*6)+(1*7)=124
124 % 10 = 4
So 1172142-67-4 is a valid CAS Registry Number.

1172142-67-4Downstream Products

1172142-67-4Relevant articles and documents

Facile access to bicyclic sultams with methyl 1-sulfonylcyclopropane-l- carboxylate moieties

Rassadin, Valentin A.,Tomashevskiy, Aleksandr A.,Sokolov, Viktor V.,Ringe, Arne,Magull, Joerg,De Meijere, Armin

supporting information; experimental part, p. 2635 - 2641 (2009/11/30)

N-(2,3-Dibromopropyl)- and N-(3,4-dibromobutyl)(methoxycarbonyl) methanesulfanilides upon treatment with potassium carbonate in DMF furnish, methyl 3-aryl-2,2-dioxo-2thia-3-azabicyclo[n.1.0]alkane-1.-carboxylates in yields ranging from 54 to 84% (10 examples). The starting materials were obtained by sulfonylation of N-alkenylanilines with methyl (chlorosulfonyl) acetate and. subsequent bromination. For the N-alkenylanil.in.es (10 examples, 60-77% yield) an efficient new synthesis employing a 2-nitrophenylsulfonyl substituent as a protective as well as an activating group has been developed. The 4-methoxyphenyl (PMP) group could easily be removed, from, the sultam. nitrogen atom by treatment with cerium(IV) ammonium nitrate.

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