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1033702-80-5

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1033702-80-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1033702-80-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,3,3,7,0 and 2 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1033702-80:
(9*1)+(8*0)+(7*3)+(6*3)+(5*7)+(4*0)+(3*2)+(2*8)+(1*0)=105
105 % 10 = 5
So 1033702-80-5 is a valid CAS Registry Number.

1033702-80-5Upstream product

1033702-80-5Downstream Products

1033702-80-5Relevant articles and documents

Enantiocontrolled synthesis of (-)-9-epi-pentazocine and (-)-aphanorphine

Yang, Xiaobao,Zhai, Hongbin,Li, Zhong

supporting information; experimental part, p. 2457 - 2460 (2009/05/26)

(Chemical Equation Presented) We have developed novel asymmetric routes to (-)-9-epi-pentazocine and (-)-aphanorphine from a D-tyrosine derivative. The tricyclic frameworks of (-)-9-epi-pentazocine and (-)-aphanorphine were assembled stereoselectively via intramolecular Friedel-Crafts reaction of the corresponding bicyclic precursors, generated with titanium-promoted enyne cyclization and indium-initiated atom-transfer radical cyclization, respectively.

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