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estra-1,3,5(10)-triene-3,17β-diol 7-methoxymethyl ether is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

88899-72-3

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88899-72-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 88899-72-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,8,8,9 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 88899-72:
(7*8)+(6*8)+(5*8)+(4*9)+(3*9)+(2*7)+(1*2)=223
223 % 10 = 3
So 88899-72-3 is a valid CAS Registry Number.

88899-72-3Downstream Products

88899-72-3Relevant academic research and scientific papers

An Alternative Route to 2-Bromo- and 2-Iodo-estradiols from Estradiol

Pert, Derek J.,Ridley, Damon D.

, p. 303 - 309 (2007/10/02)

Through careful choice of reaction conditions, alkylation of estradiol with chloromethyl methyl ether may yield either the 3,17β-bis(methoxymethyl) ether or the 3-methoxymethyl ether derivative.Treatment of either of these protected estradiols with s-butyllithium, then with trimethylsilyl chloride affords, regioselectively, the 2-trimethylsilyl derivatives which can conveniently be converted into 2-bromo- or 2-iodo-estradiol.

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