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79172-00-2

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79172-00-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 79172-00-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,9,1,7 and 2 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 79172-00:
(7*7)+(6*9)+(5*1)+(4*7)+(3*2)+(2*0)+(1*0)=142
142 % 10 = 2
So 79172-00-2 is a valid CAS Registry Number.

79172-00-2Relevant 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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