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138416-05-4

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138416-05-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138416-05-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,4,1 and 6 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 138416-05:
(8*1)+(7*3)+(6*8)+(5*4)+(4*1)+(3*6)+(2*0)+(1*5)=124
124 % 10 = 4
So 138416-05-4 is a valid CAS Registry Number.

138416-05-4Downstream Products

138416-05-4Relevant articles and documents

Reactions of steroidal olefins with sodium p-toluenesulphinate and iodine: Syntheses of steroidal sulphones

Shafiullah,Siddiqui, Ishrat Husain,Ansari, Shahid A

, p. 1056 - 1058 (2007/10/02)

Reactions of steroidal olefins such as cholest-5-ene (1), its 3β-chloro (2), 3β-hydroxy (3) and 3β-acetoxy (4) analogs with sodium p-toluenesulphinate monohydrate and iodine in dichloromethane at room temperature furnish the corresponding 6-(p-tolylsulphonyl)cholest-5-enes (5-8) and 5-iodo-6β-(p-tolylsulphonyl)-5α-cholestanes (9-12), respectively.Structural identifications have been made on the basis of elemental analysis and spectral data.

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