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91089-33-7

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91089-33-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91089-33-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,0,8 and 9 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 91089-33:
(7*9)+(6*1)+(5*0)+(4*8)+(3*9)+(2*3)+(1*3)=137
137 % 10 = 7
So 91089-33-7 is a valid CAS Registry Number.

91089-33-7Downstream Products

91089-33-7Relevant articles and documents

Synthesis of linearly and angularly fused indane-based constrained α-amino acid derivatives

Kotha, Sambasivarao,Krishna, Nimita Gopal,Misra, Shilpi,Khedkar, Priti

, p. 2945 - 2950 (2011)

The benzocyclobutene-based α-amino acid derivative, ethyl 5-acetamido-2,4,5,6-tetrahydro-1H-cyclobuta[f]indene-5-carboxylate is synthesized via coupling of a benzocyclobutene-derived dibromide with ethyl isocyanoacetate as the key step, followed by hydrolysis and subsequent acetylation. This methodology is generalized in order to prepare various linearly and angularly fused indane-based α-amino acid derivatives. Georg Thieme Verlag Stuttgart - New York.

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