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90270-40-9

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90270-40-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90270-40-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,2,7 and 0 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 90270-40:
(7*9)+(6*0)+(5*2)+(4*7)+(3*0)+(2*4)+(1*0)=109
109 % 10 = 9
So 90270-40-9 is a valid CAS Registry Number.

90270-40-9Downstream Products

90270-40-9Relevant articles and documents

ANOMALOUS ADDITION OF TELLURIUM TETRACHLORIDE TO ALLYLIC ESTERS. SHORT SYNTHESIS OF TRANS-(2S,3S)-2,3-EPOXYBUTANE.

Engman

, p. 3977 - 3984 (2007/10/02)

The addition of tellurium to various allylic esters, alcohols, ethers, amides, and imino esters was studied. Allylic esters did not produce normal 1,2-chlorotelluration products, but the addition occurred 1,3 and was accompanied by a 1,2-migration of the acyloxy group. The examples include esters of allyl, alpha -methylallyl, alpha alpha -dimethylallyl, alpha -ethylallyl, methallyl, and (E)-crotyl alcohol, usually with benzoic acid but also with acetic, cinnamic, and crotonic acids.

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