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221128-78-5

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221128-78-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221128-78-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,1,2 and 8 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 221128-78:
(8*2)+(7*2)+(6*1)+(5*1)+(4*2)+(3*8)+(2*7)+(1*8)=95
95 % 10 = 5
So 221128-78-5 is a valid CAS Registry Number.

221128-78-5Relevant articles and documents

A synthesis of some trimethoxylated 1,2,3,4-tetrahydroisoquinoline alkaloids via Pummerer reaction of N-trimethoxybenzyl-N-[2- (phenylsulfinyl)ethyl]formamides

Shinohara, Tatsumi,Takeda, Akira,Toda, Jun,Kohno, Michiyo,Sano, Takehiro

, p. 119 - 129 (2007/10/03)

Pummerer reaction of N-trimethoxybenzyl-N-[2- (phenylsulfinyl)ethyl]formamides (7) gave N-formyl-1,2,3,4-tetrahydro-4- phenyl-sulfanylisoquinolines (9) which were converted into trimethoxylated 1,2,3,4-tetrahydroisoquinoline alkaloids in the family of Cac

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