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770738-36-8

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770738-36-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 770738-36-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,7,0,7,3 and 8 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 770738-36:
(8*7)+(7*7)+(6*0)+(5*7)+(4*3)+(3*8)+(2*3)+(1*6)=188
188 % 10 = 8
So 770738-36-8 is a valid CAS Registry Number.

770738-36-8Relevant articles and documents

Towards functionalized silicon-containing α-amino acids: Asymmetric syntheses of sila analogs of homoserine and homomethionine

Smith, Richard J.,Bienz, Stefan

, p. 1681 - 1696 (2007/10/03)

The homoserine and homomethionine sila analogs, (R)-HOSi(Me 2)CH2CH(NH2)CO2H ((R)-21) and (R)-MeSCH2Si(Me2)CH2CH(NH2)CO 2H ((R)-24), respectively, were each synthesized in nine steps and in 30 and 23% overall yield, respectively, from commercially available ClSiMe 2CH2Cl. The key step of both syntheses was the asymmetric α-bromination of an Evans amide to introduce the stereogenic center of the amino acids with defined absolute configuration. While the preparation of the homomethionine analog (R)-24 followed the expected pathway, the sila analog of homoserine, (R)-21, was unexpectedly formed during the catalytic hydrogenation of an N3CH2-substituted silane derivative.

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