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138874-55-2

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138874-55-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138874-55-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,8,7 and 4 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 138874-55:
(8*1)+(7*3)+(6*8)+(5*8)+(4*7)+(3*4)+(2*5)+(1*5)=172
172 % 10 = 2
So 138874-55-2 is a valid CAS Registry Number.

138874-55-2Downstream Products

138874-55-2Relevant articles and documents

Asymmetric synthesis of (+)-mequitazine from quinine

Leroux, Sebastien,Larquetoux, Laurent,Nicolas, Marc,Doris, Eric

, p. 3549 - 3551 (2011)

The first asymmetric synthesis of the antihistaminic drug mequitazine is reported. Our approach started from quinine, a Cinchona alkaloid, whose chiral information was exploited for setting up the stereogenic center of (+)-mequitazine.

AMINOESTER DERIVATIVES USEFUL IN THE TREATMENT OF COPD

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Page/Page column 39; 40, (2016/12/22)

The invention relates to novel compounds which are both phosphodiesterase 4 (PDE4) enzyme inhibitors and muscarinic M3 receptor antagonists, methods of preparing such compounds, compositions containing them and therapeutic use thereof.

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