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161693-38-5

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161693-38-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 161693-38-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,6,9 and 3 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 161693-38:
(8*1)+(7*6)+(6*1)+(5*6)+(4*9)+(3*3)+(2*3)+(1*8)=145
145 % 10 = 5
So 161693-38-5 is a valid CAS Registry Number.

161693-38-5Downstream Products

161693-38-5Relevant articles and documents

Asymmetric Synthesis of the Key Intermediates Leading to (-)-Aphanorphine and (-)-Eptazocine

Hulme, Alison N.,Henry, Steven S.,Meyers, A. I.

, p. 1265 - 1270 (1995)

The asymmetric syntheses of two key intermediates, 8 and 15, in >99percent ee are reported.These compounds are prepared by diastereofacial addition of lithiodimethylphenylsilane to chiral naphthyloxazolines followed by methyl iodide trapping.The two stere

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