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871669-30-6

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871669-30-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 871669-30-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,1,6,6 and 9 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 871669-30:
(8*8)+(7*7)+(6*1)+(5*6)+(4*6)+(3*9)+(2*3)+(1*0)=206
206 % 10 = 6
So 871669-30-6 is a valid CAS Registry Number.

871669-30-6Relevant articles and documents

PROSTANOIDS. XXIX. SELECTIVE OXIDATION OF 7α-HYDROXY-6β-HYDROXYMETHYLENE-2-OXABICYCLOOCTAN-3-ONE BISTRIMETHYLSILYL ETHER BY REAGENTS BASED ON CHROMIUM(VI) AS KEY STAGE IN SYNTHESIS OF SULPROSTONE

Tolstikov, G. A.,Adler, M. E.,Miftakhov, M. S.

, p. 1908 - 1914 (2007/10/02)

7α-Hydroxy-6β-(3-oxo-4-phenoxy-1E-butenyl)-2-oxabicyclooctan-3-one was synthesized by the selective oxidation of 7α-hydroxy-6β-hydroxymethylene-2-oxabicyclooctan-3-one bistrimethylsilyl ether with CrO3*2Py/SiO2 and subsequent condensation of the intermediate 7α-trimethylsiloxy-6β-formyl-2-oxabicyclooctan-3-one with dimethyl 2-oxo-3-phenoxypropylphosphonate.The product was then converted into the methanesulfonamide of 16-phenoxy-17,18,19,20-tetranorprostaglandin E2 (sulprostone).

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