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170801-80-6

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170801-80-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 170801-80-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,8,0 and 1 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 170801-80:
(8*1)+(7*7)+(6*0)+(5*8)+(4*0)+(3*1)+(2*8)+(1*0)=116
116 % 10 = 6
So 170801-80-6 is a valid CAS Registry Number.

170801-80-6Downstream Products

170801-80-6Relevant articles and documents

Tricyclic CNS active agents by intramolecular Oxa-Pictet-Spengler reaction

Wunsch,Zott,Hofner,Bauschke

, p. 487 - 495 (2007/10/02)

Mitsunobu inversion of the (S)-configurated lactate (S)-7, which is prepared in four steps starting from (S)-tyrosine, leads to the (R)-configurated lactate (R)-7. The key step in the transformation of the enantiomeric lactates (S)-7 and (R)-7 into the benzomorphan analogous tricycles (R,S)-16a,b, (S,R)-16a,b, (S,S)-22, and (R,R)-22 is an intramolecular Oxa-Rictet-Spengler reaction: The amides (S)-13, (R)-13, (S)-19 and (R)-19, in which the carbonyl moiety - masked as an acetal - is linked to the 2-phenylethanol moiety, are cyclized to give the tricyclic amides (R,S)-15, (S,R)-15, (S,S)-21, and (R,R)-21, respectively. In a concentration of 100 μM both enantiomers of 16a, 16b, and 22 are not able to compete with 3H-(+)-MK 801 for the phencyclidine binding sites of NMDA receptors. In vivo, only (R,S)-16b and (S,S)-22 exhibit weak sedative and analgesic activity.

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