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222162-00-7

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222162-00-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 222162-00-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,2,1,6 and 2 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 222162-00:
(8*2)+(7*2)+(6*2)+(5*1)+(4*6)+(3*2)+(2*0)+(1*0)=77
77 % 10 = 7
So 222162-00-7 is a valid CAS Registry Number.

222162-00-7Relevant articles and documents

Total synthesis of (-)-strychnine via the Wieland - Gumlich aldehyde

Sole, Daniel,Bonjoch, Josep,Garcia-Rubio, Silvina,Peidro, Emma,Bosch, Joan

, p. 395 - 397 (2007/10/03)

Fifteen steps suffice for an enantioselective total synthesis of (-)- strychnine (1) from 1,3-cyclohexanedione. The key steps are the easy generation of the enantiopure intermediate 2, the closure of the piperidine ring by a reductive Heck reaction, and the elaboration of the indoline nucleus in an advanced synthetic stage. TBDMS = tert-butyldimethylsilyl.

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