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157823-89-7

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157823-89-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157823-89-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,8,2 and 3 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 157823-89:
(8*1)+(7*5)+(6*7)+(5*8)+(4*2)+(3*3)+(2*8)+(1*9)=167
167 % 10 = 7
So 157823-89-7 is a valid CAS Registry Number.

157823-89-7Downstream Products

157823-89-7Relevant articles and documents

Diastereoselective reactions of Grignard reagents with chiral amino lactols derived from L-aspartic acid

Yoda,Nakagami,Takabe

, p. 169 - 172 (1994)

Nucleophilic additions to chiral amino lactols obtained from L-aspartic acid containing a chiral α-silyloxymethyl function by simple Grignard reagents exhibited high stereoselectivity to provide the corresponding optically active amino alcohols containing three contiguous stereogenic centers. The mechanistic origin of the asymmetric induction is rationalized based on chelation controlled models.

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