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166883-75-6

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166883-75-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 166883-75-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,8,8 and 3 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 166883-75:
(8*1)+(7*6)+(6*6)+(5*8)+(4*8)+(3*3)+(2*7)+(1*5)=186
186 % 10 = 6
So 166883-75-6 is a valid CAS Registry Number.

166883-75-6Downstream Products

166883-75-6Relevant articles and documents

Aggregative activation and heterocyclic chemistry I complex bases promoted arynic cyclisation of imines or enaminoketones; regiochemical synthesis of indoles

Caubere, Catherine,Caubere, Paul,Ianelli, Sandra,Nardelli, Mario,Jamart-Gregoire, Brigitte

, p. 11903 - 11920 (2007/10/02)

The complex base NaNH2-t-BuONa allowed expeditious syntheses of indoles by arynic cyclisation of imines or enaminoketones prepared from halogeno anilines and carbonyl derivatives. Unstable imines may be used without purification, complex bases being unsensitive to impurities. It is showed that this kind of reaction may be applied to mixture of substrates suitably halogenated on the benzene ring. Formation of three components aggregates is proposed to explain a number of observations.

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