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157887-88-2

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157887-88-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157887-88-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,8,8 and 7 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 157887-88:
(8*1)+(7*5)+(6*7)+(5*8)+(4*8)+(3*7)+(2*8)+(1*8)=202
202 % 10 = 2
So 157887-88-2 is a valid CAS Registry Number.

157887-88-2Downstream Products

157887-88-2Relevant articles and documents

The Synthesis of Oxa-Analogues and Homologues of Naturally Occuring Polyamines

Lin, P. Kong Thoo,Kuksa, V. A.,Maguire, N. M.

, p. 859 - 866 (2007/10/03)

A number of polyamine oxa-analogues 14a-d, 19 have been synthesized.Spermidine oxa-analogues and homologues 14 were made from N-(aminooxypropyl)phthalimide 8a which was obtained either from the Fmoc-deprotection of N-phthalimide 4a or from the reaction between 3-bromopropylamine and N-hydroxyphthalimide, both reactions involving an unusual rearrangement mechanism.Sulphonated derivatives 9, 16, upon Mitsunobu condensation with N-protected 3-aminopropanol or N-alkylation with N-(bromoalkyl)phthalimides, afforded the fully protected spermidine and spermine oxa-analogues.Subsequent sequential deprotection gave spermidine analogues 14.Using the same strategy, spermine oxa-analogues 19 was synthesised. - Keywords: polyamines; oxa-analogues of polyamines; polyamine homologues; rearrangement; synthesis

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