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871259-09-5

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871259-09-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 871259-09-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,1,2,5 and 9 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 871259-09:
(8*8)+(7*7)+(6*1)+(5*2)+(4*5)+(3*9)+(2*0)+(1*9)=185
185 % 10 = 5
So 871259-09-5 is a valid CAS Registry Number.

871259-09-5Upstream product

871259-09-5Relevant articles and documents

Chirality transfer from guanidinium ylides to 3-alkenyl (or 3-alkynyl) aziridine-2-carboxylates and application to the syntheses of (2R,3S)-3-hydroxyleucinate and D-erythro-sphingosine

Disadee, Wannaporn,Ishikawa, Tsutomu

, p. 9399 - 9406 (2005)

Reaction of chiral guanidinium ylides with α,β-unsaturated aldehydes gives 3-(α,β-unsaturated) aziridine-2-carboxylates in high diastereo- and enantioselectivities (up to 93% diastereomeric excess and 98% enantiomeric excess). 3-(1-Methylvinyl)- and 3-[(E)-pentadec-1-enyl]aziridine-2- carboxylates were successfully employed to prepare (2R,3S)-3-hydroxyleucinate and D-erythro-sphingosine, respectively.

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