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141355-51-3

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141355-51-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 141355-51-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,1,3,5 and 5 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 141355-51:
(8*1)+(7*4)+(6*1)+(5*3)+(4*5)+(3*5)+(2*5)+(1*1)=103
103 % 10 = 3
So 141355-51-3 is a valid CAS Registry Number.

141355-51-3Relevant articles and documents

Convenient Asymmetric Synthesis of 3(S)-3--5-hydroxypyrrolidon-2-one, a Useful Synthon for the Thienamycin-like γ-Lactam

Nagao, Yoshimitsu,Matsunaga, Hiroshi,Kumagai, Toshio,Inoue, Yoshinori

, p. 436 - 437 (1992)

Chiral 3-substituted 5-hydroxypyrrolidin-2-one 12, useful for the synthesis of thienamycin-like γ-lactam, was successfully synthesised by utilising highly diastereoselective alkylation with the tin(II) enolate of 7 onto acetaldehyde, ammonolysis of the resultant amide 9, and oxidative cyclisation of 11.

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