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1639939-98-2

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1639939-98-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1639939-98-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,9,9,3 and 9 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1639939-98:
(9*1)+(8*6)+(7*3)+(6*9)+(5*9)+(4*3)+(3*9)+(2*9)+(1*8)=242
242 % 10 = 2
So 1639939-98-2 is a valid CAS Registry Number.

1639939-98-2Downstream Products

1639939-98-2Relevant academic research and scientific papers

Stereoselective transformations of α-trifluoromethylated ketoximes to optically active amines by enzyme-nanometal cocatalysis: Synthesis of (s)-inhibitor of phenylethanolamine n-methyltransferase

Cheng, Guilin,Wu, Qi,Shang, Zeyu,Liang, Xinhua,Lin, Xianfu

, p. 2129 - 2133 (2014/08/05)

One-pot cascade synthesis of optically active α-trifluoromethylated amines directly from ketoximes was accomplished with the use of Candida antarctica lipase B and catalysts prepared by atomic layer deposition (ALD). Compared to the commercial palladium catalyst, the ALD-prepared catalysts showed much higher activity and afforded various α-trifluoromethylated amides in good yields and with high enantioselectivity. One of the enantiopure amides was further hydrolyzed into the corresponding amine, which was treated as a crucial starting material for total synthesis of (S)-inhibitor of phenylethanolamine N-methyltransferase without loss of chiral information.

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