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667870-43-1

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667870-43-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 667870-43-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,8,7 and 0 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 667870-43:
(8*6)+(7*6)+(6*7)+(5*8)+(4*7)+(3*0)+(2*4)+(1*3)=211
211 % 10 = 1
So 667870-43-1 is a valid CAS Registry Number.

667870-43-1Relevant articles and documents

Diastereopure Preparation of α-Benzotriazolyl 1-Azacycloalka[2,1-b] [1,3]-oxazines and their Application as Versatile Chiral Precursors

Xu, Xuenong,Lu, Jun,Li, Rui,Ge, Zongming,Dong, Yanmei,Hu, Yuefei

, p. 122 - 124 (2004)

A group of diastereopure α-benzotriazolyl 1-azacycloalka[2,1-b][1,3] oxazines were prepared from non-racemic Betti base and they were employed as the versatile precursors for the preparation of chiral ligands and chiral substituted azacyclics with signifi

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