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Dear sir,

It is my pleasure to know your company.

As one of the leading manufacturer in China , HAINAN CHENGHE CHEMICAL CO., LTD. (CHC) specializes in produce and trade on Chemicals ,Pharmaceutical raw materials and intermediates. Please take the reference to our website: http://www.cnchc.com . If you find something interest or others not listed here, please feel free to contact me asap.

RE: METHYLENE BLUE - [ CAS NO.: 7220-79-3] Molecular weight : 373.90 Molecular formula : C16H18CLN3S.2H2O Specifications: Loss on drying : 15% max Residue on ignition : 0.5% max Arsenic : 0.0005% max Zinc : 0.02% max Cn : 0.03% max Packing: in 20kgs net cardboard drum. Quantity: according to your requirement Shipment: within 7 day upon receipt of you order

RE: L- PHENYLALANINOL [ CAS NO.: 3182-95-4] Molecular Formula: C9H13NO Appearance : white to Light yellow solid Content: 99%MIN (HPLC) Melting point: 91-92°C Loss on drying : 0.5% MAX Package :25KG/DRUM Usage :Medical intermediate Packing: In drum of 25Kgs net with plastic lining. shipment: prompt

RE: L-PHENYLALANINE [ CA SNO.: 63-91-2 ] Molecular Formula: C9H11NO2 Molecular Weight: : 165.19 Properties: Colorless to white scaly crystal or white crystal powder, with special smell and bitterness, it will be melted and decomposed at 283℃. Soluble in water, ethanol or ether slightly.

Appearance: White crystals or crystalline powder Purity(on dry basis): 99---100.5% Loss on drying:0.3 specific Rotation : -33.0o～-35.0o(on dry basis) Residue on ignition: 0.1% max PH: 5.4～6.0 Chlorides: 200 ppm max Sulphates: 200 ppm max Ammonium: 10 ppm max Iron: 10 ppm max Arsenic(As): 1 ppm max Heavy metals(Pb) : 10ppm max Microorganism (Optional)( Bacteria) : 100/g max Microorganism (Optional) (Mildew): 10/g max Application : Used as supplementary agent of nutrition. It is one of the needed amino acids for human body. It is a main raw material for the synthesis of aspartame.

Packing: In drum of 25Kgs net with plastic lining. shipment: prompt

RE: D- α-PHENYLGLYCINE [ CAS NO.: 875-74-1 ] Sort: Medium Molecular Formula: C8H9NO2 Molecular Wt: 151.2 Appearance: White or almost white crystalline powder Moisture(%): 0.3 MAX Assay(%): 99% MIN Rotation[a]20D : -156 ～ -160 Absorbance(410nm): 0.015 MAX Iron(PPM): 10 MAX Application: it is used as an intermediate in the synthesis of semisynthetic penicillins and cephalosporins,like Ampicillin,Bacampicillin,Piperacillin,Cefalexin and others.

Packing: In drum of 25Kgs net with plastic lining. shipment: prompt R

RE: D-α-PHENYLGLYCINOL [ CAS NO.: 56613-80-0 ] Appearance: White or Light yellow solid Content: 99%MIN(HPLC) Molecular Formula: C8H11NO Melting point: 76-79°C Loss on drying : 0.5%MAX Package :25KG/DRUM Usage :Medical intermediate

Packing: In drum of 25Kgs net with plastic lining. shipment: prompt

RE: R-(-)-MANDELIC ACID Synonyms : D-(-)-MANDELIC ACID Molecular formula: C8H8O3 Molecular weight : 152.15 CAS No: 611-71-2

Appearance: white powder Melting point: 131 - 134℃ / 765 assay ( HPLC ) : 99% min Titration : 98---102% Specific rotation: -153(±5) degrees ( in H2O ) Label precaution : light sentitive Water solubility: moderate Stability：Stable, but light sensitive. Combustible. Incompatible with strong bases, strong oxidizing agents. Toxicology：May be harmful or act as an irritant - toxicology not fully investigated. Transport information ：Non-hazardous for air, sea and road freight. Packing: in cardboard drum shipment: prompt

RE: D-PROLINE CAS NO: 344-25-2 Molecular formula: C5H9NO2 Molecular weight : 115.13 Assay : 99% min Appearance : white crystalline powder Ph : 5.9-6.9 Chloride ( As Cl ) : 0.02% max Sulphate ( as SO4 ) : 0.02% max Ammonium ( as NH4 ) : 0.02% max Iron ( as Fe ) : 10 ppm max Heavy metals : 10 ppm max Arsenic (as As ) : 1 ppm max OTHER AMINO ACIDS : 0.02% max Loss on drying : 0.2% max Residue on ignition : 0.1% max STATE OF SOLUTION : 98% min SPECIFIC ROTATION: +83.50 ～ +86.50 ( C=4 in H2O ) Packing: in cardboard drum Shipment: prompt

RE: D-PROLINOL CAS NO: 68832-13-3 Molecular formula: C5H11NO Molecular weight : 101.15 Appearance : viscose colorless to slightly yellow liquid Boiling point ( 2mm Hg ) : 74--76℃ Flash point : 187℃ min 300 MHz 1H : similar to the standard sample assay: 99% min specific rotation ( 20/D): -31±20 ( C=1 in Toluene ) refractive rate ( 25℃) : 1.4845---1.4852 Shipment: prompt

Please find our below main export product for your reference:

ITACONIC ACID ANHYDRIDE L-METHIONINE AJI92 / USP24 GRADE L-MALIC ACID DL-MALIC ACID ANETHALI TRITHINUM CAUSTIC SODA FLAKE / SOLID NATURAL FLAVOR EXTRACT L(+)-TARTARIC ACID DL-TARTARIC ACID ANHYDROUS (2R,3R)-(+)TARTARIC ACID( CAS NO:87-69-4) DISPERSE PIGMENTS 2.6-DICHLORO-4-NITROANILINE TRICLOSAN RAMIPRIL SODIUM TRIPOLYPHOSPHATE ALBENDAZOLE USP23 DIETHYLENE GLYCOL MONOMETHYL ETHER FURAZOLIDONE USP23 L-CAMPHOR SULFONIC ACID 1-NAPHTHOL ( ALPHA-NAPHTHOL ) 1-NAPHTHOL-5-SULFONIC ACID ( L-ACID ) PE-68/(TETRA BROMO BISPHENOL A (2,3-DIBROMO-PROPYL) ETHER) SODIUM HEXAMETAPHOSPHATE TRISODIUM PHOSPHATE POTASSIUM NITRATE 99.8%MIN P-BENZOQUINONE SULPHANILIC ACID REFINED 2.4.6-TRIBROMOPHENOL ERYTHROMYCIN THIOCYANATE CITRIC ACID MONO. C.I.VAT BLUE 1 , INDIGO GRANULAR 94% MIN POLYTETRAFLUOROETHYLENE RESIN CHC-1 GRADE SODIUM FLUORIDE ZIRCONIUM SAND / FLOUR ILMENITE CONCENTRATE NATURAL RUTILE CONCENTRATE MONAZITE CONCENTRATE

We are looking forward to hearing from you soon.

Yours,

Linda lin / manager

************************************************************** HAINAN CHENGHE CHEMICAL CO., LTD ADD: HOUSE 3-3, LONGKUN NORTH ROAD 2, HAIKOU, HAINAN ,CHINA P.C.: 570125 FAX: 0086-898-68950036 TEL : 0086-898- 68960069 E-MAIL: cnchc@cnchc.com / linda0214@public.hk.hi.cn BANK: BANK OF CHINA HAINAN BRANCH ACCOUNT NO.: 06016708091001 SWIFT NO: BKCHCNBJ740 BANK ADDRESS: 38, DATONG ROAD, HAIKOU CITY, HAINAN,CHINA ***************************************************************