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203643-16-7

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203643-16-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 203643-16-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,6,4 and 3 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 203643-16:
(8*2)+(7*0)+(6*3)+(5*6)+(4*4)+(3*3)+(2*1)+(1*6)=97
97 % 10 = 7
So 203643-16-7 is a valid CAS Registry Number.

203643-16-7Downstream Products

203643-16-7Relevant articles and documents

Synthesis and binding study of phosphonate analogues of PNAs and their hybrids with PNAs

Efimov, Vladimir A.,Choob, Michael V.,Buryakova, Alla A.,Chakhmakhcheva, Oksana G.

, p. 1671 - 1679 (2007/10/03)

The preparation of monomers for the synthesis of phosphonate analogues of peptide nucleic acids containing the four natural nucleobases: thymine, cytosine, adenine and guanine, has been accomplished. The monomers obtained were used for the automated online solid phase synthesis of pure phosphono- PNA oligomers as well as chimeras consisting of phosphono-PNA and PNA resudies. The hybridization properties of these oligonucleotide mimics to complementary DNA and RNA fragments were studied.

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