130917-99-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 130917-99-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,0,9,1 and 7 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 130917-99:
(8*1)+(7*3)+(6*0)+(5*9)+(4*1)+(3*7)+(2*9)+(1*9)=126
126 % 10 = 6
So 130917-99-6 is a valid CAS Registry Number.
130917-99-6Relevant articles and documents
SYNTHESIS OF 5-METHYL-19-NOR-5β-PREGN-9-ENE DERIVATIVES
Polman, Jiri,Kasal, Alexander
, p. 1783 - 1791 (2007/10/02)
3β,5,6β-Trihydroxy-5α-pregnan-20-one 3-pivalate (I) was converted into 3β,6β-dihydroxy-5-methyl-19-nor-5β-pregn-9-en-20-one 3-pivalate 5-acetate (II) under conditions of Westphalen rearrangement.Deoxygenation in the position 6β was effected by treatment o
