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1208119-80-5

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1208119-80-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1208119-80-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,0,8,1,1 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1208119-80:
(9*1)+(8*2)+(7*0)+(6*8)+(5*1)+(4*1)+(3*9)+(2*8)+(1*0)=125
125 % 10 = 5
So 1208119-80-5 is a valid CAS Registry Number.

1208119-80-5Downstream Products

1208119-80-5Relevant articles and documents

Gold(l)-catalyzed ring expansions of unactivated alkynylcyclopropanes to (E)-2-alkylidenecyclobutanamines in the presence of sulfonamides

Ye, Siyu,Yu, Zhi-Xiang

supporting information; experimental part, p. 804 - 807 (2010/04/06)

(Chemical Equation Presented) The ring expansion of cyclopropane derivatives provides a powerful method to construct synthetically useful four-membered carbocycles. Herein, a new type of gold(l)-catalyzed ring expansion of an unactivated alkynylcyclopropane/sulfonamide trapping strategy to (E)-2-alkylidenecyclobutanamines was described. The reaction tolerates a range of aryl and alkyl substituents with moderate to good yields.

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