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103493-12-5

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103493-12-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 103493-12-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,4,9 and 3 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 103493-12:
(8*1)+(7*0)+(6*3)+(5*4)+(4*9)+(3*3)+(2*1)+(1*2)=95
95 % 10 = 5
So 103493-12-5 is a valid CAS Registry Number.

103493-12-5Downstream Products

103493-12-5Relevant articles and documents

Selective synthesis of carbamate protected polyamines using alkyl phenyl carbonates

Pittelkow, Michael,Lewinsky, Rasmus,Christensen, Jorn Bolstad

, p. 2195 - 2202 (2002)

Utilising alkyl phenyl carbonates, an economical, practical and versatile method for selective Boc, Cbz and Alloc protection of polyamines has been developed. This method allows Boc, Cbz and Alloc protection of primary amines in the presence of secondary amines by reaction of the polyamines with the alkyl phenyl carbonates. Also, this method allows mono carbamate protection of simple symmetrical aliphatic α,ω-alkanediamines in high yields with respect to the diamine. Finally, the method allows selective carbamate protection of a primary amine located on a primary carbon in the presence of a primary amine located on a secondary or a tertiary carbon in excellent yields.

Chemoselective synthesis of protected polyamines and facile synthesis of polyamine derivatives using O-alkyl-O′-(N-succinimidyl) carbonates

Adamczyk, Maciej,Fishpaugh, Jeffrey R.,Heuser, Kevin J.

, p. 339 - 348 (2007/10/03)

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