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201813-15-2

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201813-15-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 201813-15-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,8,1 and 3 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 201813-15:
(8*2)+(7*0)+(6*1)+(5*8)+(4*1)+(3*3)+(2*1)+(1*5)=82
82 % 10 = 2
So 201813-15-2 is a valid CAS Registry Number.

201813-15-2Relevant articles and documents

Conjugate addition of amino acid side chains to dyes containing aikynone, alkynoic ester and alkynoic amide linker arms

Crisp, Geoffrey T.,Millan, Michael J.

, p. 649 - 666 (2007/10/03)

Derivatives of fluorescein, 7-hydroxycoumarin, Sudan 1 and dansyl chloride with linker arms containing a conjugated terminal alkyne have been prepared. The Michael addition of the sulfanyl group of protected cysteine, the hydroxyl group of protected serine and the ε-amino group of protected lysine to the conjugated alkyne gave the expected heterosubstituted vinyl products.

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