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39619-69-7

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39619-69-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 39619-69-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,6,1 and 9 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 39619-69:
(7*3)+(6*9)+(5*6)+(4*1)+(3*9)+(2*6)+(1*9)=157
157 % 10 = 7
So 39619-69-7 is a valid CAS Registry Number.
InChI:InChI=1/C14H30O5/c1-2-3-4-5-7-16-9-11-18-13-14-19-12-10-17-8-6-15/h15H,2-14H2,1H3

39619-69-7Downstream Products

39619-69-7Relevant articles and documents

Combinatorial synthesis of PEG oligomer libraries

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Page/Page column 9, (2010/02/15)

A simple chain-extending approach was established for the scale-up of the monoprotected monodisperse PEG diol materials. Reactions of THP-(OCH2CH2)n—OMs (n=4, 8, 12) with a large excess of commercially available H—(OCH2CH2)n—OH (n=1-4) under basic conditions led to THP-(OCH2CH2)n—OH (n=5-15). Similarly, Me-(OCH2CH2)n—OH (n=4-11, 13) were prepared from Me-(OCH2CH2)n—OMs (n=3, 7, 11). For the chain elongation steps, 40-80% yields were achieved through extraction purification. PEG oligomer libraries I and II were generated in 50-95% overall yields by alkylation or acylation of THP-(OCH2CH2)n—OH (n=1-15) followed by deprotection. Alkylation of Me-(OCH2CH2)n—OH (n=1-11, 13) with X—(CH2)m—CO2R (X=Br or OMs) and subsequent hydrolysis led to PEG oligomer library III in 30-60% overall yields. Combinatorial purification techniques were adapted to the larger-scale library synthesis. A total of 498 compounds, each with a weight of 2-5 g and a minimum purity of 90%, were synthesized.

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