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1227189-57-2

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1227189-57-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1227189-57-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,7,1,8 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1227189-57:
(9*1)+(8*2)+(7*2)+(6*7)+(5*1)+(4*8)+(3*9)+(2*5)+(1*7)=162
162 % 10 = 2
So 1227189-57-2 is a valid CAS Registry Number.

1227189-57-2Upstream product

1227189-57-2Downstream Products

1227189-57-2Relevant articles and documents

An enantioselective formal synthesis of (+)-lactacystin from hydroxymethyl glutamic acid (HMG)

Hameed, Abdul,Blake, Alexander J.,Hayes, Christopher J.

, p. 535 - 538 (2010)

A formal synthesis of (+)-lactacystin from hydroxymeth-ylglutamic acid (HMG), with an alkylidene carbene insertion reaction being used to construct the key nitrogen-bearing quaternary centre has been completed. Our route intercepts that of Shibasaki at an advanced pyrrolidinone intermediate, from which the synthesis can be completed following Donohoe's route. Georg Thieme Verlag Stuttgart · New York.

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