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173411-22-8

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173411-22-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 173411-22-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,4,1 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 173411-22:
(8*1)+(7*7)+(6*3)+(5*4)+(4*1)+(3*1)+(2*2)+(1*2)=108
108 % 10 = 8
So 173411-22-8 is a valid CAS Registry Number.

173411-22-8Relevant articles and documents

Toward the development of a general chiral auxiliary. Part 6: Structural effects on diastereoselection using camphor derived lactams: Evaluation of (1R,4S)-1,7,7-trimethyl-3-azabicyclo[2.2.1]hept-5-en-3-one as a chiral controller

Boeckman Jr., Robert K.,Laci, Michelle A.,Johnson, Alan T.

, p. 205 - 217 (2001)

A new camphor-derived chiral lactam was designed, prepared and evaluated as a chiral controller in asymmetric Diels-Alder and aldol reactions. The new lactam, bearing a C(5)-C(6) double bond, was anticipated to afford higher diastereofacial selection resulting from the removal of additional steric hindrance to reagent approach distal to the geminal dimethyl bridge by comparison with the previously studied saturated analogue (the favored mode approach in the saturated analogue). Surprisingly, a deterioration in the extent of diastereofacial selectivity was observed for both reaction types. These results are interpreted in terms of the geometric changes imposed upon the ring system as a whole by introduction of the unsaturation.

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