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p-nitrobenzyl 6α-bromo-2α-methyl-2β-[(1,2,3-triazol-1-yl)methyl]-penam-3α-carboxylate-1α-oxide is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

904671-22-3

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904671-22-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 904671-22-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,4,6,7 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 904671-22:
(8*9)+(7*0)+(6*4)+(5*6)+(4*7)+(3*1)+(2*2)+(1*2)=163
163 % 10 = 3
So 904671-22-3 is a valid CAS Registry Number.

904671-22-3Relevant academic research and scientific papers

Process for preparation of penam derivatives

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Page/Page column 11, (2008/06/13)

The invention relates to novel processes for preparing penam derivatives, such as Tazobactam and derivatives thereof. The processes according to the invention encompass procedures for the protection and deprotection of the carboxylic group as well as for the oxidation of the sulphur moiety of penam derivatives. Additionally, the present invention relates to new intermediates for the production of penam derivatives, allowing the desired penam-derivatives to be formulated with high purity and in good yields.

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