63042-28-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 63042-28-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,3,0,4 and 2 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 63042-28:
(7*6)+(6*3)+(5*0)+(4*4)+(3*2)+(2*2)+(1*8)=94
94 % 10 = 4
So 63042-28-4 is a valid CAS Registry Number.
63042-28-4Relevant articles and documents
PROCESS FOR PREPARATION OF ESTRADIOL VALERATE AND A NOVEL CRYSTALLINE FORM A OF ESTRADIOL DIVALERATE
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Paragraph 0052-0055, (2013/09/12)
The present invention relates to the process for the preparation of estradiol valerate (I) which involves isolation of crystalline estradiol divalerate (III) by crystallization from an alcoholic solvent.