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194158-91-3

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194158-91-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 194158-91-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,4,1,5 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 194158-91:
(8*1)+(7*9)+(6*4)+(5*1)+(4*5)+(3*8)+(2*9)+(1*1)=163
163 % 10 = 3
So 194158-91-3 is a valid CAS Registry Number.

194158-91-3Downstream Products

194158-91-3Relevant articles and documents

A Short, Efficient Copper-Mediated Synthesis of 1α,25-Dihydroxyvitamin D2 (1α,25-Dihydroxyergocalciferol) and C-24 Analogs

Torneiro, Mercedes,Fall, Yagamare,Castedo, Luis,Mouri?o, Antonio

, p. 6344 - 6352 (2007/10/03)

Two synthetic routes to the nonnatural hormone 1α,25-dihydroxyergocalciferol [2b, 1α,25-(OH)2D2] and analogs modified at C-24 have been developed both starting from aldehyde 7b. Key steps in route A (eight steps, ≈38% overall yield f

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