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1638640-04-6

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1638640-04-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1638640-04-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,8,6,4 and 0 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1638640-04:
(9*1)+(8*6)+(7*3)+(6*8)+(5*6)+(4*4)+(3*0)+(2*0)+(1*4)=176
176 % 10 = 6
So 1638640-04-6 is a valid CAS Registry Number.

1638640-04-6Relevant articles and documents

Stereoselective total synthesis of (3S,5S)-1,7-bis(4-hydroxyphenyl)heptane-3,5-diol, (3S,5S)-alpinikatin, and its diastereoisomers

Venkatesham, Kunuru,Purushotham Reddy, Sudina,Chinnababu, Baggu,Suresh Babu, Katragadda

, p. 1307 - 1314 (2015/09/28)

Stereoselective synthesis of the diarylheptanoids, (3S,5S)-1,7-bis(4-hydroxyphenyl)heptane-3,5-diol (1), (3S,5S)-alpinikatin (3), and their diastereoisomers (2 and 4, resp.), was achieved from readily available 4-hydroxybenzaldehyde. The synthetic sequenc

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