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81482-44-2

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81482-44-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81482-44-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,4,8 and 2 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 81482-44:
(7*8)+(6*1)+(5*4)+(4*8)+(3*2)+(2*4)+(1*4)=132
132 % 10 = 2
So 81482-44-2 is a valid CAS Registry Number.

81482-44-2Relevant academic research and scientific papers

An Efficient Synthesis of 6-Oxopenicillanic and 7-Oxocephalosporanic Acid Derivatives

Hagiwara, Daijiro,Sawada, Kozo,Ohnami, Tetsuo,Aratani, Matsuhiko,Hashimoto, Masashi

, p. 578 - 579 (1982)

Trifluoromethanesulphonation of benzyl 6-aminopenicillanate (3) and the 7-aminocephalosporanates (7a-c) with (CF3SO2)2O gave the bis(trifluoromethylsulphonate) derivatives (5) and (8a-c), which were then converted into the imines (6) and (9a-c) by treatme

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