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(3S,4S)-3-chloro-4-<(S)-1-hydroxymethyl-2-<(p-toluenesulfonyl)oxy>ethoxy>-2-azetidinone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

138481-23-9

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138481-23-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138481-23-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,4,8 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 138481-23:
(8*1)+(7*3)+(6*8)+(5*4)+(4*8)+(3*1)+(2*2)+(1*3)=139
139 % 10 = 9
So 138481-23-9 is a valid CAS Registry Number.

138481-23-9Relevant academic research and scientific papers

Enantiocontrolled synthesis of the antifungal β-lactam (2R,5S)-2-(hydroxymethyl)clavam

Konosu,Oida

, p. 2212 - 2215 (1991)

The antifungal β-lactam (2R,5S)-2-(hydroxymethyl)clavam was synthesized in a convergent and stereocontrolled manner from methyl 6-phthalimidopenicillanate and 2,3-O-isopropylidene-(R)-glyceraldehyde. Convenient methods of acetonide cleavage and phthalimide deblocking are also described.

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