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1271193-75-9

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1271193-75-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1271193-75-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,1,1,9 and 3 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1271193-75:
(9*1)+(8*2)+(7*7)+(6*1)+(5*1)+(4*9)+(3*3)+(2*7)+(1*5)=149
149 % 10 = 9
So 1271193-75-9 is a valid CAS Registry Number.

1271193-75-9Downstream Products

1271193-75-9Relevant academic research and scientific papers

Strain-promoted azide-alkyne cycloadditions of benzocyclononynes

Tummatorn, Jumreang,Batsomboon, Paratchata,Clark, Ronald J.,Alabugin, Igor V.,Dudley, Gregory B.

, p. 2093 - 2097 (2012/05/19)

Preliminary studies related to the design and development of new cycloalkyne reagents for metal-free click coupling are reported. Cyclononynes are more stable than cyclooctynes, and the robust benzocyclononyne platform offers spontaneous reactivity toward

Generation of medium-ring cycloalkynes by ring expansion of vinylogous acyl triflates

Tummatorn, Jumreang,Dudley, Gregory B.

, p. 1572 - 1575 (2011/04/26)

Reductive cyclization of aryl and vinyl iodides tethered to vinylogous acyl triflates (VATs) induces a ring-expanding fragmentation to provide cyclic alkynyl ketones, including strained nine-membered cycloalkynes, in fair to excellent yield. The tandem cy

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