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170901-07-2

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170901-07-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 170901-07-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,9,0 and 1 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 170901-07:
(8*1)+(7*7)+(6*0)+(5*9)+(4*0)+(3*1)+(2*0)+(1*7)=112
112 % 10 = 2
So 170901-07-2 is a valid CAS Registry Number.

170901-07-2Relevant articles and documents

A novel and efficient process to 13β-ethyl-gon-4-ene-3,11,17-trione

Liu,Su,Li

, p. 3113 - 3124 (1995)

A novel synthetic process to 13β-ethyl-gon-4-ene-3,11,17-trione with the total yield of 44% starting from 13β-ethyl-17β-hydroxy-3-methoxy-gona-2,5(10)-diene was described.

PROCESS FOR THE SELECTIVE ISOLATION, PURIFICATION AND SEPARATION OF MONOHYDROXYLATED 3,17-DIKETO-STEROID COMPOUNDS

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Page/Page column 12-14, (2008/06/13)

The subject of the present invention is a new process for the selective isolation, purification and separation of monohydroxylated 3,17-diketo-steroid compounds from a solution obtained preferably by microbiological way containing a mixture of steroid compounds via selective extraction, purification and selective crystallization of the steroid compounds by treatment of several solvents.

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