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1322547-44-3

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1322547-44-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1322547-44-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,2,2,5,4 and 7 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1322547-44:
(9*1)+(8*3)+(7*2)+(6*2)+(5*5)+(4*4)+(3*7)+(2*4)+(1*4)=133
133 % 10 = 3
So 1322547-44-3 is a valid CAS Registry Number.

1322547-44-3Downstream Products

1322547-44-3Relevant articles and documents

Synthesis of (3S)-(tert-butyldimethylsilyloxy)methylcyclopentan-1-one as a key intermediate of sphingosine 1-phosphate-1 receptor agonists

Asano, Masayoshi,Nakamura, Tsuyoshi,Sekiguchi, Yukiko,Mizuno, Yumiko,Yamaguchi, Takahiro,Kuroda, Takeshi,Tamaki, Kazuhiko,Nishi, Takahide

, p. 449 - 456 (2013/07/11)

Herein we report the asymmetric synthesis of (3S)-(tert- butyldimethylsilyloxy)methylcyclopentan-1-one (S)-3 as a practical chiral synthon for a wide range of pharmaceutical and/or natural products, using Lipshutz's asymmetric copper-catalyzed conjugate reduction. This method makes it feasible to prepare a conformationally constrained cyclopentane analogue 12, which is one of the key intermediates for the synthesis of novel sphingosine 1-phosphate-1 receptor agonists.

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