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67337-15-9

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67337-15-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 67337-15-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,3,3 and 7 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 67337-15:
(7*6)+(6*7)+(5*3)+(4*3)+(3*7)+(2*1)+(1*5)=139
139 % 10 = 9
So 67337-15-9 is a valid CAS Registry Number.

67337-15-9Relevant articles and documents

Total synthesis of biologically active 20S-hydroxyvitamin D3

Wang, Qinghui,Lin, Zongtao,Kim, Tae-Kang,Slominski, Andrzej T.,Miller, Duane D.,Li, Wei

, p. 153 - 162 (2015/12/01)

A total synthetic strategy of 20S-hydroxyVitamin D3 [20S-(OH)D3] involving modified synthesis of key intermediates 7 and 12, Grignard reaction to stereoselectively generate 20S-OH and Wittig-Horner coupling to establish D3 framework, was completed in 16 steps with an overall yield of 0.4%. The synthetic 20S-(OH)D3 activated Vitamin D receptor (VDR) and initiated the expression of downstream genes. In addition, 20S-(OH)D3 showed similar inhibitory potency as calcitriol [1,25(OH)2D3] on proliferation of melanoma cells.

SYNTHESIS OF 1α-FLUORO-25-HYDROXY-16-23E-DIENE-26,27-BISHOMO-20-EPI-CHOLECALCIFEROL

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Page/Page column 14; 39-40, (2008/12/07)

The invention provides a method of producing 20-methyl vitamin D3 compounds of formula (I). The method includes hydroxylation, carbonyl reduction, fluoride substitution, epoxide deoxygenation, and Wittig-type couplings.

NOVEL METHOD OF TREATMENT OF MALE SUB-FERTILITY

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Page/Page column 64-65, (2008/06/13)

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