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188916-70-3

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188916-70-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 188916-70-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,9,1 and 6 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 188916-70:
(8*1)+(7*8)+(6*8)+(5*9)+(4*1)+(3*6)+(2*7)+(1*0)=193
193 % 10 = 3
So 188916-70-3 is a valid CAS Registry Number.

188916-70-3Downstream Products

188916-70-3Relevant articles and documents

A practical and scalable synthesis of SR 142801, a tachykinin NK3 antagonist

Chen, Huai G.,Chung,Goel,Johnson,Kesten,Knobelsdorf,Lee,Rubin

, p. 555 - 560 (2007/10/03)

A practical and scalable total synthesis of tachykinin NK3 receptor antagonist SR 142801, (R)-N-[1-[3-[1-benzoyl-3-(3,4-dichlorophenyl)-3-piperidinyl]propyl]-4-phenyl-4 -piperidinyl]-N-methyl acetamide 1 is described. The absolute configuration of the key intermediate 7 was determined by single crystal X-ray crystallography, on the basis of which, the absolute configuration of SR 142801 should be (R)-(+), instead of the recently reported (S)-(+).

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