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3-Sulfooxyestra-1,3,5(10)-trien-17-one triethylammonium salt is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

21171-73-3

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21171-73-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21171-73-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,1,7 and 1 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21171-73:
(7*2)+(6*1)+(5*1)+(4*7)+(3*1)+(2*7)+(1*3)=73
73 % 10 = 3
So 21171-73-3 is a valid CAS Registry Number.

21171-73-3Downstream Products

21171-73-3Relevant academic research and scientific papers

A fusion method for the preparation of steroid sulfates

Dusza,Joseph,Bernstein

, p. 317 - 323 (2007/10/02)

A method for the preparation of steroid triethylammonium sulfates is outlined which involves the fusion of triethylamine-sulfur trioxide and steroids. Experimental details are presented which define the process as a thermal equilibrium resulting in the preferential sulfation of aliphatic hydroxyl groups. Salfation of an aromatic hydroxyl group can be achieved in the absence of an aliphatic hydroxyl group. With excess reagent both types of hydroxyl groups in the same molecule can be sulfated.

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