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669068-63-7

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669068-63-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 669068-63-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,9,0,6 and 8 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 669068-63:
(8*6)+(7*6)+(6*9)+(5*0)+(4*6)+(3*8)+(2*6)+(1*3)=207
207 % 10 = 7
So 669068-63-7 is a valid CAS Registry Number.

669068-63-7Relevant articles and documents

Preparation of 2,3-dihydro-1H-spiro[isoquinoline-4,4′-piperidine] via an N-sulfonyl Pictet-Spengler reaction

Liu, Jian,Jian, Tianying,Sebhat, Iyassu,Nargund, Ravi

, p. 5115 - 5117 (2007/10/03)

A high yielding synthesis of variously substituted 2,3-dihydro-1H-spiro[isoquinoline-4,4′-piperidine] is reported. N-(2-nitrophenyl)sulfonyl was successfully used as both an activating and protecting group for the key Pictet-Spengler reaction.

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