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1643440-50-9

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1643440-50-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1643440-50-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,4,3,4,4 and 0 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1643440-50:
(9*1)+(8*6)+(7*4)+(6*3)+(5*4)+(4*4)+(3*0)+(2*5)+(1*0)=149
149 % 10 = 9
So 1643440-50-9 is a valid CAS Registry Number.

1643440-50-9Downstream Products

1643440-50-9Relevant articles and documents

Chiral derivatives of 1,2-benzenedisulfonimide as efficient Bronsted acid catalysts in the Strecker reaction

Barbero, Margherita,Cadamuro, Silvano,Dughera, Stefano,Torregrossa, Roberta

, p. 3902 - 3911 (2014/06/09)

Two chiral derivatives of 1,2-benzenedisulfonimide, namely 4-methyl-3,6-bis(o-tolyl)-1,2-benzenedisulfonimide and 4,5-dimethyl-3,6-bis(o- tolyl)-1,2-benzenedisulfonimide, have been easily synthesized in good overall yields (respectively 34% and 41%) by me

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